NAVIGATION
TABLE
VISIBLE SATELLITE
Monthly Snow Area Rankings
| Select a Region | ||
| Northern Hemisphere | North America | United States |
| Eurasia | Canada | Alaska |
| Northern Hemisphere | ||||||
| 2018 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 44,547 | 43,981 | 566 | 15/53 | 46,846 (2012) | 37,441 (1980) |
| 11 | 37,774 | 33,958 | 3,815 | 3/53 | 38,597 (1993) | 28,279 (1979) |
| 10 | 20,058 | 17,544 | 2,514 | 14/51 | 25,724 (1976) | 12,781 (1988) |
| 9 | 6,365 | 5,235 | 1,131 | 9/50 | 7,762 (1972) | 3,838 (1990) |
| 8 | 2,733 | 2,797 | -64 | 27/50 | 5,308 (1967) | 2,089 (1968) |
| 7 | 3,008 | 3,665 | -658 | 39/49 | 8,210 (1967) | 2,325 (2012) |
| 6 | 7,838 | 9,418 | -1,580 | 41/51 | 14,972 (1978) | 4,922 (2012) |
| 5 | 18,259 | 19,019 | -760 | 37/52 | 23,093 (1974) | 15,377 (2010) |
| 4 | 32,059 | 30,215 | 1,844 | 10/52 | 34,606 (1979) | 27,914 (2016) |
| 3 | 41,825 | 40,130 | 1,696 | 13/52 | 44,282 (1985) | 37,122 (1990) |
| 2 | 46,293 | 45,594 | 699 | 19/52 | 51,320 (1978) | 42,667 (1995) |
| 1 | 46,930 | 46,866 | 65 | 27/52 | 50,275 (2008) | 41,890 (1981) |
| 2017 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 43,569 | 43,981 | -411 | 34/53 | 46,846 (2012) | 37,441 (1980) |
| 11 | 35,975 | 33,958 | 2,017 | 10/53 | 38,597 (1993) | 28,279 (1979) |
| 10 | 21,167 | 17,544 | 3,623 | 9/51 | 25,724 (1976) | 12,781 (1988) |
| 9 | 6,151 | 5,235 | 916 | 11/50 | 7,762 (1972) | 3,838 (1990) |
| 8 | 2,915 | 2,797 | 118 | 21/50 | 5,308 (1967) | 2,089 (1968) |
| 7 | 3,454 | 3,665 | -212 | 28/49 | 8,210 (1967) | 2,325 (2012) |
| 6 | 9,274 | 9,418 | -144 | 27/51 | 14,972 (1978) | 4,922 (2012) |
| 5 | 20,734 | 19,019 | 1,715 | 12/52 | 23,093 (1974) | 15,377 (2010) |
| 4 | 31,169 | 30,215 | 954 | 17/52 | 34,606 (1979) | 27,914 (2016) |
| 3 | 40,067 | 40,130 | -62 | 29/52 | 44,282 (1985) | 37,122 (1990) |
| 2 | 45,964 | 45,594 | 370 | 23/52 | 51,320 (1978) | 42,667 (1995) |
| 1 | 49,184 | 46,866 | 2,319 | 6/51 | 50,275 (2008) | 41,890 (1981) |
| 2016 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 45,396 | 43,981 | 1,415 | 8/53 | 46,846 (2012) | 37,441 (1980) |
| 11 | 36,927 | 33,958 | 2,969 | 6/53 | 38,597 (1993) | 28,279 (1979) |
| 10 | 22,955 | 17,544 | 5,410 | 3/51 | 25,724 (1976) | 12,781 (1988) |
| 9 | 5,728 | 5,235 | 493 | 20/50 | 7,762 (1972) | 3,838 (1990) |
| 8 | 2,626 | 2,797 | -171 | 31/50 | 5,308 (1967) | 2,089 (1968) |
| 7 | 2,554 | 3,665 | -1,112 | 44/49 | 8,210 (1967) | 2,325 (2012) |
| 6 | 5,580 | 9,418 | -3,838 | 49/51 | 14,972 (1978) | 4,922 (2012) |
| 5 | 16,343 | 19,019 | -2,676 | 49/52 | 23,093 (1974) | 15,377 (2010) |
| 4 | 27,914 | 30,215 | -2,301 | 52/52 | 34,606 (1979) | 27,914 (2016) |
| 3 | 37,165 | 40,130 | -2,965 | 51/52 | 44,282 (1985) | 37,122 (1990) |
| 2 | 43,509 | 45,594 | -2,085 | 50/52 | 51,320 (1978) | 42,667 (1995) |
| 1 | 48,800 | 46,866 | 1,934 | 10/51 | 50,275 (2008) | 41,890 (1981) |
| 2015 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 43,480 | 43,981 | -501 | 35/53 | 46,846 (2012) | 37,441 (1980) |
| 11 | 36,246 | 33,958 | 2,287 | 9/53 | 38,597 (1993) | 28,279 (1979) |
| 10 | 21,400 | 17,544 | 3,856 | 8/51 | 25,724 (1976) | 12,781 (1988) |
| 9 | 5,871 | 5,235 | 636 | 16/50 | 7,762 (1972) | 3,838 (1990) |
| 8 | 2,576 | 2,797 | -221 | 37/50 | 5,308 (1967) | 2,089 (1968) |
| 7 | 2,520 | 3,665 | -1,146 | 45/49 | 8,210 (1967) | 2,325 (2012) |
| 6 | 5,430 | 9,418 | -3,987 | 50/51 | 14,972 (1978) | 4,922 (2012) |
| 5 | 17,002 | 19,019 | -2,017 | 46/52 | 23,093 (1974) | 15,377 (2010) |
| 4 | 30,090 | 30,215 | -125 | 30/52 | 34,606 (1979) | 27,914 (2016) |
| 3 | 38,460 | 40,130 | -1,670 | 45/52 | 44,282 (1985) | 37,122 (1990) |
| 2 | 44,988 | 45,594 | -606 | 38/52 | 51,320 (1978) | 42,667 (1995) |
| 1 | 47,325 | 46,866 | 459 | 24/51 | 50,275 (2008) | 41,890 (1981) |
| Eurasia | ||||||
| 2018 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 27,594 | 27,135 | 460 | 16/53 | 29,699 (2002) | 22,882 (1980) |
| 11 | 22,053 | 20,474 | 1,580 | 13/53 | 24,132 (1993) | 16,796 (1979) |
| 10 | 10,391 | 9,497 | 894 | 22/51 | 17,218 (1976) | 5,578 (1988) |
| 9 | 1,300 | 1,526 | -226 | 33/50 | 3,409 (1977) | 540 (1984) |
| 8 | 141 | 375 | -234 | 44/50 | 1,859 (1967) | 82 (1968) |
| 7 | 206 | 765 | -559 | 41/49 | 3,551 (1967) | 141 (2012) |
| 6 | 2,532 | 3,609 | -1,512 | 41/51 | 7,129 (1978) | 1,068 (2012) |
| 5 | 9,307 | 9,723 | -582 | 34/52 | 12,511 (1976) | 7,262 (2013) |
| 4 | 17,257 | 17,174 | 83 | 26/52 | 20,687 (1981) | 14,767 (2014) |
| 3 | 25,041 | 24,492 | 549 | 22/52 | 27,950 (1981) | 20,183 (2002) |
| 2 | 28,818 | 28,479 | 339 | 24/52 | 32,285 (1978) | 25,913 (2002) |
| 1 | 29,338 | 29,322 | 15 | 29/52 | 32,265 (2008) | 25,823 (1981) |
| 2017 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 26,859 | 27,135 | -275 | 32/53 | 29,699 (2002) | 22,882 (1980) |
| 11 | 21,292 | 20,474 | 818 | 18/53 | 24,132 (1993) | 16,796 (1979) |
| 10 | 12,052 | 9,497 | 2,554 | 11/51 | 17,218 (1976) | 5,578 (1988) |
| 9 | 2,142 | 1,526 | 616 | 12/50 | 3,409 (1977) | 540 (1984) |
| 8 | 262 | 375 | -113 | 28/50 | 1,859 (1967) | 82 (1968) |
| 7 | 387 | 765 | -379 | 36/49 | 3,551 (1967) | 141 (2012) |
| 6 | 4,220 | 3,609 | 611 | 20/51 | 7,129 (1978) | 1,068 (2012) |
| 5 | 10,975 | 9,723 | 1,252 | 12/52 | 12,511 (1976) | 7,262 (2013) |
| 4 | 17,587 | 17,174 | 414 | 21/52 | 20,687 (1981) | 14,767 (2014) |
| 3 | 24,558 | 24,492 | 66 | 28/52 | 27,950 (1981) | 20,183 (2002) |
| 2 | 29,262 | 28,479 | 783 | 19/52 | 32,285 (1978) | 25,913 (2002) |
| 1 | 31,149 | 29,322 | 1,826 | 7/51 | 32,265 (2008) | 25,823 (1981) |
| 2016 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 27,751 | 27,135 | 616 | 12/53 | 29,699 (2002) | 22,882 (1980) |
| 11 | 24,034 | 20,474 | 3,560 | 2/53 | 24,132 (1993) | 16,796 (1979) |
| 10 | 13,484 | 9,497 | 3,987 | 3/51 | 17,218 (1976) | 5,578 (1988) |
| 9 | 1,690 | 1,526 | 163 | 21/50 | 3,409 (1977) | 540 (1984) |
| 8 | 190 | 375 | -185 | 38/50 | 1,859 (1967) | 82 (1968) |
| 7 | 188 | 765 | -577 | 43/49 | 3,551 (1967) | 141 (2012) |
| 6 | 1,269 | 3,609 | -2,340 | 50/51 | 7,129 (1978) | 1,068 (2012) |
| 5 | 8,544 | 9,723 | -1,179 | 44/52 | 12,511 (1976) | 7,262 (2013) |
| 4 | 15,482 | 17,174 | -1,692 | 48/52 | 20,687 (1981) | 14,767 (2014) |
| 3 | 22,573 | 24,492 | -1,919 | 48/52 | 27,950 (1981) | 20,183 (2002) |
| 2 | 26,832 | 28,479 | -1,647 | 49/52 | 32,285 (1978) | 25,913 (2002) |
| 1 | 30,449 | 29,322 | 1,127 | 14/51 | 32,265 (2008) | 25,823 (1981) |
| 2015 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 26,647 | 27,135 | -487 | 33/53 | 29,699 (2002) | 22,882 (1980) |
| 11 | 22,548 | 20,474 | 2,204 | 8/53 | 24,132 (1993) | 16,796 (1979) |
| 10 | 12,672 | 9,497 | 3,175 | 7/51 | 17,218 (1976) | 5,578 (1988) |
| 9 | 1,718 | 1,526 | 192 | 19/50 | 3,409 (1977) | 540 (1984) |
| 8 | 150 | 375 | -225 | 41/50 | 1,859 (1967) | 82 (1968) |
| 7 | 223 | 765 | -542 | 40/49 | 3,551 (1967) | 141 (2012) |
| 6 | 1,350 | 3,609 | -2,259 | 49/51 | 7,129 (1978) | 1,068 (2012) |
| 5 | 8,933 | 9,723 | -790 | 40/52 | 12,511 (1976) | 7,262 (2013) |
| 4 | 17,475 | 17,174 | 301 | 22/52 | 20,687 (1981) | 14,767 (2014) |
| 3 | 23,399 | 24,492 | -1,093 | 43/52 | 27,950 (1981) | 21,183 (2002) |
| 2 | 27,594 | 28,479 | -885 | 43/52 | 32,285 (1978) | 25,913 (2002) |
| 1 | 29,957 | 29,322 | 634 | 20/51 | 32,265 (2008) | 25,823 (1981) |
| North America | ||||||
| 2018 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 16,953 | 16,846 | 106 | 21/53 | 18,273 (2009) | 14,559 (1980) |
| 11 | 15,720 | 13,485 | 2,236 | 1/53 | 15,720 (2018) | 11,483 (1979) |
| 10 | 9,667 | 8,047 | 1,620 | 2/51 | 9,763 (2002) | 6,364 (1979) |
| 9 | 5,065 | 3,709 | 1,357 | 1/50 | 5,065 (2018) | 2,892 (1968) |
| 8 | 2,592 | 2,422 | 170 | 17/50 | 3,855 (1978) | 2,007 (1968) |
| 7 | 2,801 | 2,900 | -99 | 29/49 | 5,073 (1978) | 2,184 (2012) |
| 6 | 5,306 | 5,809 | -503 | 36/51 | 7,843 (1978) | 3,854 (2012) |
| 5 | 8,951 | 9,296 | -345 | 33/52 | 11,478 (1974) | 7,798 (2010) |
| 4 | 14,803 | 13,041 | 1,761 | 4/52 | 15,077 (1975) | 11,020 (2010) |
| 3 | 16,784 | 15,638 | 1,146 | 5/52 | 17,293 (1969) | 14,041 (1968) |
| 2 | 17,475 | 17,115 | 360 | 19/52 | 19,035 (1978) | 15,831 (1992) |
| 1 | 17,592 | 17,543 | 49 | 30/52 | 18,816 (1985) | 16,067 (1981) |
| 2017 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 16,710 | 16,846 | -136 | 25/53 | 18,273 (2009) | 14,559 (1980) |
| 11 | 14,683 | 13,485 | 1,198 | 8/53 | 15,720 (2018) | 11,483 (1979) |
| 10 | 9,115 | 8,047 | 1,068 | 8/51 | 9,763 (2002) | 6,364 (1979) |
| 9 | 4,009 | 3,709 | 300 | 16/50 | 5,065 (2018) | 2,892 (1968) |
| 8 | 2,652 | 2,422 | 231 | 14/50 | 3,855 (1978) | 2,007 (1968) |
| 7 | 3,067 | 2,900 | 167 | 19/49 | 5,073 (1978) | 2,184 (2012) |
| 6 | 5,054 | 5,809 | -754 | 41/51 | 7,843 (1978) | 3,854 (2012) |
| 5 | 9,759 | 9,296 | 463 | 18/52 | 11,478 (1974) | 7,798 (2010) |
| 4 | 13,582 | 13,041 | 540 | 22/52 | 15,077 (1975) | 11,020 (2010) |
| 3 | 15,510 | 15,638 | -128 | 33/52 | 17,293 (1969) | 14,041 (1968) |
| 2 | 16,702 | 17,115 | -413 | 38/52 | 19,035 (1978) | 15,831 (1992) |
| 1 | 18,035 | 17,543 | 492 | 13/51 | 18,816 (1985) | 16,067 (1981) |
| 2016 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 17,645 | 16,846 | 799 | 11/53 | 18,273 (2009) | 14,559 (1980) |
| 11 | 12,893 | 13,485 | -592 | 42/53 | 15,720 (2018) | 11,483 (1979) |
| 10 | 9,471 | 8,047 | 1,424 | 3/51 | 9,763 (2002) | 6,364 (1979) |
| 9 | 4,038 | 3,709 | 330 | 14/50 | 5,065 (2018) | 2,892 (1968) |
| 8 | 2,435 | 2,422 | 14 | 25/50 | 3,855 (1978) | 2,007 (1968) |
| 7 | 2,366 | 2,900 | -534 | 44/49 | 5,073 (1978) | 2,184 (2012) |
| 6 | 4,311 | 5,809 | -1,497 | 49/51 | 7,843 (1978) | 3,854 (2012) |
| 5 | 7,799 | 9,296 | -1,497 | 51/52 | 11,478 (1974) | 7,798 (2010) |
| 4 | 12,433 | 13,041 | -609 | 42/52 | 15,077 (1975) | 11,020 (2010) |
| 3 | 14,591 | 15,638 | -1,046 | 50/52 | 17,293 (1969) | 14,041 (1968) |
| 2 | 16,677 | 17,115 | -438 | 40/52 | 19,035 (1978) | 15,831 (1992) |
| 1 | 18,351 | 17,543 | 808 | 6/51 | 18,816 (1985) | 16,067 (1981) |
| 2015 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 16,833 | 16,846 | -13 | 24/53 | 18,273 (2009) | 14,559 (1980) |
| 11 | 13,697 | 13,485 | 213 | 21/53 | 15,720 (2018) | 11,483 (1979) |
| 10 | 8,728 | 8,047 | 681 | 14/51 | 9,763 (2002) | 6,364 (1979) |
| 9 | 4,153 | 3,709 | 444 | 9/50 | 5,065 (2018) | 2,892 (1968) |
| 8 | 2,426 | 2,422 | 4 | 26/50 | 3,855 (1978) | 2,007 (1968) |
| 7 | 2,296 | 2,900 | -604 | 47/49 | 5,073 (1978) | 2,184 (2012) |
| 6 | 4,080 | 5,809 | -1,728 | 50/51 | 7,843 (1978) | 3,854 (2012) |
| 5 | 8,070 | 9,296 | -1,226 | 49/52 | 11,478 (1974) | 7,798 (2010) |
| 4 | 12,615 | 13,041 | -426 | 37/52 | 15,077 (1975) | 11,020 (2010) |
| 3 | 15,061 | 15,638 | -576 | 42/52 | 17,293 (1969) | 14,041 (1968) |
| 2 | 17,394 | 17,115 | 279 | 21/52 | 19,035 (1978) | 15,831 (1992) |
| 1 | 17,368 | 17,543 | -175 | 25/51 | 18,816 (1985) | 16,067 (1981) |
| Canada | ||||||
| 2018 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 10,263 | 10,096 | 167 | 12/53 | 10,403 (2016) | 9,691 (1980) |
| 11 | 9,978 | 8,663 | 1,315 | 1/53 | 9,978 (2018) | 7,254 (1987) |
| 10 | 6,708 | 4,774 | 1,934 | 1/51 | 6,708 (2018) | 3,488 (1987) |
| 9 | 2,812 | 1,395 | 1,417 | 1/50 | 2,812 (2018) | 647 (1968) |
| 8 | 424 | 375 | 49 | 22/50 | 1,569 (1978) | 132 (2009) |
| 7 | 616 | 772 | -156 | 32/49 | 2,718 (1978) | 143 (2012) |
| 6 | 2,852 | 3,258 | -407 | 35/51 | 4,899 (1978) | 1,604 (2012) |
| 5 | 5,715 | 5,905 | -190 | 27/52 | 7,902 (1974) | 4,762 (2010) |
| 4 | 9,745 | 8,647 | 1,097 | 4/52 | 9,860 (1979) | 6,939 (2010) |
| 3 | 10,312 | 10,023 | 289 | 11/52 | 10,368 (1982) | 9,486 (1981) |
| 2 | 10,349 | 10,279 | 70 | 17/52 | 10,424 (2013) | 10,015 (1981) |
| 1 | 10,387 | 10,294 | 93 | 7/52 | 10,424 (1982) | 10,060 (1981) |
| 2017 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 10,219 | 10,096 | 123 | 16/53 | 10,403 (2016) | 9,691 (1980) |
| 11 | 9,917 | 8,663 | 1,254 | 2/53 | 9,978 (2018) | 7,254 (1987) |
| 10 | 5,808 | 4,774 | 1,034 | 7/51 | 6,708 (2018) | 3,488 (1987) |
| 9 | 1,607 | 1,395 | 212 | 18/50 | 2,812 (2018) | 647 (1968) |
| 8 | 470 | 375 | 95 | 19/50 | 1,569 (1978) | 132 (2009) |
| 7 | 863 | 772 | 91 | 19/49 | 2,718 (1978) | 143 (2012) |
| 6 | 2,599 | 3,258 | -659 | 41/51 | 4,899 (1978) | 1,604 (2012) |
| 5 | 6,495 | 5,905 | 590 | 11/52 | 7,902 (1974) | 4,762 (2010) |
| 4 | 9,265 | 8,647 | 617 | 19/52 | 9,860 (1979) | 6,939 (2010) |
| 3 | 10,101 | 10,023 | 78 | 30/52 | 10,368 (1982) | 9,486 (1981) |
| 2 | 10,320 | 10,279 | 41 | 22/52 | 10,424 (2013) | 10,015 (1981) |
| 1 | 10,364 | 10,294 | 70 | 10/51 | 10,424 (1982) | 10,060 (1981) |
| 2016 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 10,403 | 10,096 | 307 | 1/53 | 10,403 (2016) | 9,691 (1980) |
| 11 | 8,315 | 8,663 | -348 | 40/53 | 9,978 (2018) | 7,254 (1987) |
| 10 | 6,578 | 4,774 | 1,804 | 2/51 | 6,708 (2018) | 3,488 (1987) |
| 9 | 1,683 | 1,395 | 288 | 15/50 | 2,812 (2018) | 647 (1968) |
| 8 | 388 | 375 | 12 | 24/50 | 1,569 (1978) | 132 (2009) |
| 7 | 317 | 772 | -454 | 44/49 | 2,718 (1978) | 143 (2012) |
| 6 | 2,023 | 3,258 | -1,235 | 49/51 | 4,899 (1978) | 1,604 (2012) |
| 5 | 5,011 | 5,905 | -894 | 50/52 | 7,902 (1974) | 4,762 (2010) |
| 4 | 8,270 | 8,647 | -378 | 40/52 | 9,860 (1979) | 6,939 (2010) |
| 3 | 9,910 | 10,023 | -113 | 42/52 | 10,368 (1982) | 9,486 (1981) |
| 2 | 10,245 | 10,279 | -35 | 39/52 | 10,424 (2013) | 10,015 (1981) |
| 1 | 10,354 | 10,294 | 60 | 13/51 | 10,424 (1982) | 10,060 (1981) |
| 2015 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 9,999 | 10,096 | -96 | 41/53 | 10,403 (2016) | 9,691 (1980) |
| 11 | 8,695 | 8,663 | 32 | 30/53 | 9,978 (2018) | 7,254 (1987) |
| 10 | 5,596 | 4,774 | 822 | 11/51 | 6,708 (2018) | 3,488 (1987) |
| 9 | 1,605 | 1,395 | 210 | 19/50 | 2,812 (2018) | 647 (1968) |
| 8 | 281 | 375 | -94 | 35/50 | 1,569 (1978) | 132 (2009) |
| 7 | 247 | 772 | -525 | 48/49 | 2,718 (1978) | 143 (2012) |
| 6 | 1,889 | 3,258 | -1,370 | 50/51 | 4,899 (1978) | 1,604 (2012) |
| 5 | 5,200 | 5,905 | -705 | 48/52 | 7,902 (1974) | 4,762 (2010) |
| 4 | 8,593 | 8,647 | -55 | 36/52 | 9,860 (1979) | 6,939 (2010) |
| 3 | 10,093 | 10,023 | 70 | 31/52 | 10,368 (1982) | 9,486 (1981) |
| 2 | 10,351 | 10,279 | 72 | 15/52 | 10,424 (2013) | 10,015 (1981) |
| 1 | 10,324 | 10,294 | 30 | 22/51 | 10,424 (1982) | 10,060 (1981) |
| Contiguous United States | ||||||
| 2018 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 3,004 | 3,061 | -57 | 25/53 | 4,246 (2009) | 1,242 (1980) |
| 11 | 2,153 | 1,231 | 921 | 3/53 | 2,268 (2014) | 174 (1999) |
| 10 | 177 | 186 | -9 | 18/51 | 548 (2009) | 0 (tie) |
| 9 | 0 | 8 | -8 | 19-50/50 | 54 (1978) | 0 (tie) |
| 8 | 0 | 6 | -6 | 12-50/50 | 65 (1983) | 0 (tie) |
| 7 | 0 | 17 | -17 | 24-49/49 | 84 (1997) | 0 (tie) |
| 6 | 0 | 55 | -55 | 33-51/51 | 268 (1973) | 0 (tie) |
| 5 | 83 | 167 | -83 | 37/52 | 527 (1983) | 0 (2004) |
| 4 | 1,316 | 730 | 587 | 5/52 | 1,602 (1975) | 209 (1968) |
| 3 | 2,705 | 1,918 | 787 | 6/52 | 3,209 (1969) | 906 (1968) |
| 2 | 3,363 | 3,105 | 258 | 20/52 | 4,910 (1978) | 1,972 (1992) |
| 1 | 3,442 | 3,535 | -93 | 31/52 | 4,678 (1985) | 2,292 (1981) |
| 2017 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 2,751 | 3,061 | -309 | 34/53 | 4,246 (2009) | 1,242 (1980) |
| 11 | 1,150 | 1,231 | -81 | 23/53 | 2,268 (2014) | 174 (1999) |
| 10 | 184 | 186 | -2 | 17/51 | 548 (2009) | 0 (tie) |
| 9 | 45 | 8 | 37 | 3/50 | 54 (1978) | 0 (tie) |
| 8 | 0 | 6 | -6 | 12-50/50 | 65 (1983) | 0 (tie) |
| 7 | 0 | 17 | -17 | 24-49/49 | 84 (1997) | 0 (tie) |
| 6 | 0 | 55 | -55 | 33-51/51 | 268 (1973) | 0 (tie) |
| 5 | 135 | 167 | -32 | 27/52 | 527 (1983) | 0 (2004) |
| 4 | 631 | 730 | -99 | 32/52 | 1,602 (1975) | 209 (1968) |
| 3 | 1,709 | 1,918 | -209 | 34/52 | 3,209 (1969) | 906 (1968) |
| 2 | 2,673 | 3,105 | -432 | 41/52 | 4,910 (1978) | 1,972 (1992) |
| 1 | 3,918 | 3,535 | 383 | 13/51 | 4,678 (1985) | 2,292 (1981) |
| 2016 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 3,494 | 3,061 | 433 | 13/53 | 4,246 (2009) | 1,242 (1980) |
| 11 | 965 | 1,231 | -266 | 35/53 | 2,268 (2014) | 174 (1999) |
| 10 | 58 | 186 | -128 | 35/51 | 548 (2009) | 0 (tie) |
| 9 | 4 | 8 | -4 | 17/50 | 54 (1978) | 0 (tie) |
| 8 | 0 | 6 | -6 | 12-50/50 | 65 (1983) | 0 (tie) |
| 7 | 0 | 17 | -17 | 24-49/49 | 84 (1997) | 0 (tie) |
| 6 | 0 | 55 | -55 | 33-51/51 | 268 (1973) | 0 (tie) |
| 5 | 32 | 167 | -135 | 46/52 | 527 (1983) | 0 (2004) |
| 4 | 612 | 730 | -117 | 34/52 | 1,602 (1975) | 209 (1968) |
| 3 | 989 | 1,918 | -929 | 51/52 | 3,209 (1969) | 906 (1968) |
| 2 | 2,722 | 3,105 | -382 | 39/52 | 4,910 (1978) | 1,972 (1992) |
| 1 | 4,275 | 3,535 | 740 | 7/51 | 4,678 (1985) | 2,292 (1981) |
| 2015 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 3,103 | 3,061 | 42 | 23/53 | 4,246 (2009) | 1,242 (1980) |
| 11 | 1,417 | 1,231 | 185 | 20/53 | 2,268 (2014) | 174 (1999) |
| 10 | 31 | 186 | -156 | 44/51 | 548 (2009) | 0 (tie) |
| 9 | 0 | 8 | -8 | 19-50/50 | 54 (1978) | 0 (tie) |
| 8 | 0 | 6 | -6 | 12-50/50 | 65 (1983) | 0 (tie) |
| 7 | 0 | 17 | -17 | 24-49/49 | 84 (1997) | 0 (tie) |
| 6 | 0 | 55 | -55 | 33-51/51 | 268 (1973) | 0 (tie) |
| 5 | 101 | 167 | -66 | 33/52 | 527 (1983) | 0 (2004) |
| 4 | 417 | 730 | -313 | 44/52 | 1,602 (1975) | 209 (1968) |
| 3 | 1,285 | 1,918 | -633 | 47/52 | 3,209 (1969) | 906 (1968) |
| 2 | 3,340 | 3,105 | 235 | 21/52 | 4,910 (1978) | 1,972 (1992) |
| 1 | 3,340 | 3,535 | -195 | 34/51 | 4,678 (1985) | 2,292 (1981) |
| Alaska | ||||||
| 2018 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 1,500 | 1,480 | 19 | 7-23/53 | 1,534 (2012) | 1,330 (1967) |
| 11 | 1,403 | 1,406 | -3 | 33/53 | 1,500 (tie) | 950 (1979) |
| 10 | 596 | 889 | -293 | 49/51 | 1,228 (1971) | 348 (1979) |
| 9 | 82 | 194 | -113 | 44/50 | 417 (1996) | 35 (1974) |
| 8 | 52 | 55 | -3 | 29/50 | 546 (1967) | 0 (tie) |
| 7 | 41 | 74 | -33 | 34/49 | 445 (1967) | 0 (tie) |
| 6 | 305 | 329 | -24 | 32/51 | 856 (1985) | 37 (2015) |
| 5 | 987 | 1,033 | -47 | 33/52 | 1,486 (1985) | 595 (2016) |
| 4 | 1,526 | 1,423 | 104 | 1/52 | 1,526 (2018) | 1,360 (2016) |
| 3 | 1,534 | 1,486 | 49 | 2/52 | 1,534 (2008) | 1,293 (1968) |
| 2 | 1,534 | 1,515 | 20 | 1-5/52 | 1,534 (tie) | 1,417 (1968) |
| 1 | 1,534 | 1,495 | 39 | 1-4/52 | 1,534 (tie) | 1,423 (1986) |
| 2017 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 1,514 | 1,480 | 34 | 3/53 | 1,534 (2012) | 1,330 (1967) |
| 11 | 1,429 | 1,406 | 23 | 22/53 | 1,500 (tie) | 950 (1979) |
| 10 | 947 | 889 | 58 | 19/51 | 1,228 (1971) | 348 (1979) |
| 9 | 206 | 194 | 12 | 21/50 | 417 (1996) | 35 (1974) |
| 8 | 88 | 55 | 33 | 16/50 | 546 (1967) | 0 (tie) |
| 7 | 92 | 74 | 18 | 18/49 | 445 (1967) | 0 (tie) |
| 6 | 305 | 329 | -23 | 31/51 | 856 (1985) | 37 (2015) |
| 5 | 953 | 1,033 | -80 | 35/52 | 1,486 (1985) | 595 (2016) |
| 4 | 1,500 | 1,423 | 77 | 2-14/52 | 1,526 (2018) | 1,360 (2016) |
| 3 | 1,500 | 1,486 | 14 | 9-26/52 | 1,534 (2008) | 1,293 (1968) |
| 2 | 1,500 | 1,515 | -15 | 32-42/52 | 1,534 (tie) | 1,417 (1968) |
| 1 | 1,525 | 1,495 | 30 | 5/51 | 1,534 (tie) | 1,423 (1986) |
| 2016 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 1,529 | 1,480 | 48 | 2/53 | 1,534 (2012) | 1,330 (1967) |
| 11 | 1,424 | 1,406 | 18 | 23/53 | 1,500 (tie) | 950 (1979) |
| 10 | 648 | 889 | -241 | 48/51 | 1,228 (1971) | 348 (1979) |
| 9 | 166 | 194 | -29 | 28/50 | 417 (1996) | 35 (1974) |
| 8 | 27 | 55 | -28 | 32/50 | 546 (1967) | 0 (tie) |
| 7 | 46 | 74 | -28 | 32/49 | 445 (1967) | 0 (tie) |
| 6 | 157 | 329 | -172 | 44/51 | 856 (1985) | 37 (2015) |
| 5 | 595 | 1,033 | -438 | 52/52 | 1,486 (1985) | 595 (2016) |
| 4 | 1,360 | 1,423 | -63 | 52/52 | 1,526 (2018) | 1,360 (2016) |
| 3 | 1,496 | 1,486 | 10 | 27/52 | 1,534 (2008) | 1,293 (1968) |
| 2 | 1,500 | 1,515 | -15 | 32-42/52 | 1,534 (tie) | 1,417 (1968) |
| 1 | 1,490 | 1,495 | -5 | 37/51 | 1,534 (tie) | 1,423 (1986) |
| 2015 | 1981-2010 Normal | Period of Record from 11-1966 | ||||
| Month | Area | Mean | Departure | Rank | Maximum (Year) | Minimum (Year) |
| 12 | 1,501 | 1,480 | 20 | 6/53 | 1,534 (2012) | 1,330 (1967) |
| 11 | 1,399 | 1,406 | -7 | 35/53 | 1,500 (tie) | 950 (1979) |
| 10 | 940 | 889 | 51 | 20/51 | 1,228 (1971) | 348 (1979) |
| 9 | 380 | 194 | 185 | 4/50 | 417 (1996) | 35 (1974) |
| 8 | 69 | 55 | 14 | 25/50 | 546 (1967) | 0 (tie) |
| 7 | 0 | 74 | -74 | 47-49/49 | 445 (1967) | 0 (tie) |
| 6 | 37 | 329 | -291 | 51/51 | 856 (1985) | 37 (2015) |
| 5 | 606 | 1,033 | -428 | 51/52 | 1,486 (1985) | 595 (2016) |
| 4 | 1,419 | 1,423 | -4 | 45/52 | 1,526 (2018) | 1,360 (2016) |
| 3 | 1,475 | 1,486 | -11 | 37/52 | 1,534 (2008) | 1,293 (1968) |
| 2 | 1,487 | 1,515 | -28 | 45/52 | 1,534 (tie) | 1,417 (1968) |
| 1 | 1,500 | 1,495 | 4 | 15-35/51 | 1,534 (tie) | 1,423 (1986) |
Alaska rankings were revised in June 2016.
Note: Missing months are July 1968, June-Oct 1969, and July-Sep 1971.