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Monthly Snow Area Rankings

  All snow cover extents are shown in thousands of square kilometers
  * Note: These calculations are based on NH SCE CDR v01r01

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Northern Hemisphere North America United States
Eurasia Canada Alaska

 

Northern Hemisphere
2021 1981-2010 Normal Period of Record from 11-1966
Month Area Mean Departure Rank Maximum (Year) Minimum (Year)
4 28,841 30,215 -1,375 45/55 34,606 (1979) 27,914 (2016)
3 38,609 40,130 -1,520 44/55 44,282 (1985) 37,122 (1990)
2 46,090 45,594 496 22/55 51,320 (1978) 42,667 (1995)
1 46,769 46,866 -96 32/55 50,275 (2008) 41,890 (1981)
 
2020 1981-2010 Normal Period of Record from 11-1966
Month Area Mean Departure Rank Maximum (Year) Minimum (Year)
12 43,699 43,981 -282 32/55 46,846 (2012) 37,441 (1980)
11 35,973 33,958 2,014 12/55 38,597 (1993) 28,279 (1979)
10 21,220 17,544 3,676 10/53 25,724 (1976) 12,781 (1988)
9 4,505 5,235 -730 42/52 7,762 (1972) 3,838 (1990)
8 2,292 2,797 -505 50/52 5,308 (1967) 2,089 (1968)
7 2,406 3,665 -1,259 50/51 8,210 (1967) 2,325 (2012)
6 5,961 9,418 -3,457 49/53 14,972 (1978) 4,922 (2012)
5 16,659 19,019 -2,360 49/54 23,093 (1974) 15,377 (2010)
4 29,137 30,215 -1,078 42/55 34,606 (1979) 27,914 (2016)
3 37,714 40,130 -2,416 51/55 44,282 (1985) 37,122 (1990)
2 43,477 45,594 -2,117 53/55 51,320 (1978) 42,667 (1995)
1 46,375 46,866 -490 38/55 50,275 (2008) 41,890 (1981)
 
2019 1981-2010 Normal Period of Record from 11-1966
Month Area Mean Departure Rank Maximum (Year) Minimum (Year)
12 43,469 43,981 -512 37/55 46,846 (2012) 37,441 (1980)
11 37,060 33,958 3,102 5/55 38,597 (1993) 28,279 (1979)
10 22,256 17,544 4,712 5/53 25,724 (1976) 12,781 (1988)
9 5,145 5,235 -90 32/52 7,762 (1972) 3,838 (1990)
8 2,508 2,797 -289 41/52 5,308 (1967) 2,089 (1968)
7 2,613 3,665 -1,052 44/51 8,210 (1967) 2,325 (2012)
6 5,936 9,418 -3,481 50/53 14,972 (1978) 4,922 (2012)
5 17,063 19,019 -1,956 44/54 23,093 (1974) 15,377 (2010)
4 29,060 30,215 -1,155 43/55 34,606 (1979) 27,914 (2016)
3 39,480 40,130 -650 37/55 44,282 (1985) 37,122 (1990)
2 46,025 45,594 432 24/55 51,320 (1978) 42,667 (1995)
1 47,239 46,866 374 26/55 50,275 (2008) 41,890 (1981)
 
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 15/55 46,846 (2012) 37,441 (1980)
11 37,774 33,958 3,815 3/55 38,597 (1993) 28,279 (1979)
10 20,058 17,544 2,514 16/53 25,724 (1976) 12,781 (1988)
9 6,365 5,235 1,131 9/52 7,762 (1972) 3,838 (1990)
8 2,733 2,797 -64 27/52 5,308 (1967) 2,089 (1968)
7 3,008 3,665 -658 39/51 8,210 (1967) 2,325 (2012)
6 7,838 9,418 -1,580 41/53 14,972 (1978) 4,922 (2012)
5 18,259 19,019 -760 37/54 23,093 (1974) 15,377 (2010)
4 32,059 30,215 1,844 10/55 34,606 (1979) 27,914 (2016)
3 41,825 40,130 1,696 13/55 44,282 (1985) 37,122 (1990)
2 46,293 45,594 699 19/55 51,320 (1978) 42,667 (1995)
1 46,930 46,866 65 28/55 50,275 (2008) 41,890 (1981)

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Eurasia
2021 1981-2010 Normal Period of Record from 11-1966
Month Area Mean Departure Rank Maximum (Year) Minimum (Year)
4 16,485 17,174 -689 40/55 20,687 (1981) 14,767 (2014)
3 23,691 24,492 -801 42/55 27,950 (1981) 20,183 (2002)
2 27,695 28,479 -783 42/55 32,285 (1978) 25,913 (2002)
1 29,115 29,322 -207 36/55 32,265 (2008) 25,823 (1981)
 
2020 1981-2010 Normal Period of Record from 11-1966
Month Area Mean Departure Rank Maximum (Year) Minimum (Year)
12 27,203 27,135 69 26/55 29,699 (2002) 22,882 (1980)
11 21,592 20,474 1,119 17/55 24,132 (1993) 16,796 (1979)
10 10,957 9,497 1,459 19/53 17,218 (1976) 5,578 (1988)
9 582 1,526 -944 50/52 3,409 (1977) 540 (1984)
8 72 375 -303 52/52 1,859 (1967) 72 (2020)
7 141 765 -624 50-51/51 3,551 (1967) 141 (tie)
6 1,123 3,609 -2,486 52/53 7,129 (1978) 1,068 (2012)
5 7,574 9,723 -2,149 52/54 12,511 (1976) 7,262 (2013)
4 15,199 17,174 -1,975 53/55 20,687 (1981) 14,767 (2014)
3 22,096 24,492 -2,396 52/55 27,950 (1981) 20,183 (2002)
2 26,761 28,479 -1,718 53/55 32,285 (1978) 25,913 (2002)
1 28,869 29,322 -453 40/55 32,265 (2008) 25,823 (1981)
 
2019 1981-2010 Normal Period of Record from 11-1966
Month Area Mean Departure Rank Maximum (Year) Minimum (Year)
12 26,304 27,135 -831 43/55 29,699 (2002) 22,882 (1980)
11 21,974 20,474 1,501 14/55 24,132 (1993) 16,796 (1979)
10 12,768 9,497 3,270 7/53 17,218 (1976) 5,578 (1988)
9 1,574 1,526 48 27/52 3,409 (1977) 540 (1984)
8 158 375 -217 40/52 1,859 (1967) 72 (2020)
7 315 765 -450 38/51 3,551 (1967) 141 (2012)
6 1,742 3,609 -1,867 46/53 7,129 (1978) 1,068 (2012)
5 8,503 9,723 -1,459 46/54 12,511 (1976) 7,262 (2013)
4 16,301 17,174 -873 42/55 20,687 (1981) 14,767 (2014)
3 22,898 24,492 -1,594 48/55 27,950 (1981) 20,183 (2002)
2 27,678 28,479 -801 43/55 32,285 (1978) 25,913 (2002)
1 29,581 29,322 259 25/55 32,265 (2008) 25,823 (1981)
 
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 16/55 29,699 (2002) 22,882 (1980)
11 22,053 20,474 1,580 13/55 24,132 (1993) 16,796 (1979)
10 10,391 9,497 894 24/53 17,218 (1976) 5,578 (1988)
9 1,300 1,526 -226 34/52 3,409 (1977) 540 (1984)
8 141 375 -234 45/52 1,859 (1967) 72 (2020)
7 206 765 -559 42/51 3,551 (1967) 141 (2012)
6 2,532 3,609 -1,512 41/53 7,129 (1978) 1,068 (2012)
5 9,307 9,723 -582 34/54 12,511 (1976) 7,262 (2013)
4 17,257 17,174 83 26/55 20,687 (1981) 14,767 (2014)
3 25,041 24,492 549 22/55 27,950 (1981) 20,183 (2002)
2 28,818 28,479 339 24/55 32,285 (1978) 25,913 (2002)
1 29,338 29,322 15 30/55 32,265 (2008) 25,823 (1981)

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North America
2021 1981-2010 Normal Period of Record from 11-1966
Month Area Mean Departure Rank Maximum (Year) Minimum (Year)
4 12,356 13,041 -686 46/55 15,077 (1975) 11,020 (2010)
3 14,918 15,638 -719 47/55 17,293 (1969) 14,041 (1968)
2 18,394 17,115 1,279 4/55 19,035 (1978) 15,831 (1992)
1 17,654 17,543 111 28/55 18,816 (1985) 16,067 (1981)
 
2020 1981-2010 Normal Period of Record from 11-1966
Month Area Mean Departure Rank Maximum (Year) Minimum (Year)
12 16,496 16,846 -351 37/55 18,273 (2009) 14,559 (1980)
11 14,380 13,485 896 13/55 15,720 (2018) 11,483 (1979)
10 10,263 8,047 2,216 1/53 10,263 (2020) 6,364 (1979)
9 3,923 3,709 214 22/52 5,065 (2018) 2,892 (1968)
8 2,220 2,422 -201 42/52 3,855 (1978) 2,007 (1968)
7 2,265 2,900 -635 50/51 5,073 (1978) 2,184 (2012)
6 4,838 5,809 -971 43/53 7,843 (1978) 3,854 (2012)
5 9,084 9,296 -212 28/54 11,478 (1974) 7,798 (2010)
4 13,938 13,041 897 14/55 15,077 (1975) 11,020 (2010)
3 15,618 15,638 -19 32/55 17,293 (1969) 14,041 (1968)
2 16,716 17,115 -399 40/55 19,035 (1978) 15,831 (1992)
1 17,506 17,543 -37 34/55 18,816 (1985) 16,067 (1981)
 
2019 1981-2010 Normal Period of Record from 11-1966
Month Area Mean Departure Rank Maximum (Year) Minimum (Year)
12 17,165 16,846 318 18/55 18,273 (2009) 14,559 (1980)
11 15,086 13,485 1,601 3/55 15,720 (2018) 11,483 (1979)
10 9,488 8,047 1,441 4/53 10,263 (2020) 6,364 (1979)
9 3,570 3,709 -138 37/52 5,065 (2018) 2,892 (1968)
8 2,350 2,422 -72 34/52 3,855 (1978) 2,007 (1968)
7 2,298 2,900 -602 47/51 5,073 (1978) 2,184 (2012)
6 4,194 5,809 -1,615 51/53 7,843 (1978) 3,854 (2012)
5 8,560 9,296 -736 47/54 11,478 (1974) 7,798 (2010)
4 12,759 13,041 -283 36/55 15,077 (1975) 11,020 (2010)
3 16,582 15,638 944 9/55 17,293 (1969) 14,041 (1968)
2 18,347 17,115 1,232 5/55 19,035 (1978) 15,831 (1992)
1 17,658 17,543 115 27/55 18,816 (1985) 16,067 (1981)
 
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 22/55 18,273 (2009) 14,559 (1980)
11 15,720 13,485 2,236 1/55 15,720 (2018) 11,483 (1979)
10 9,667 8,047 1,620 3/53 10,263 (2020) 6,364 (1979)
9 5,065 3,709 1,357 1/52 5,065 (2018) 2,892 (1968)
8 2,592 2,422 170 17/52 3,855 (1978) 2,007 (1968)
7 2,801 2,900 -99 29/51 5,073 (1978) 2,184 (2012)
6 5,306 5,809 -503 36/53 7,843 (1978) 3,854 (2012)
5 8,951 9,296 -345 34/54 11,478 (1974) 7,798 (2010)
4 14,803 13,041 1,761 4/55 15,077 (1975) 11,020 (2010)
3 16,784 15,638 1,146 5/55 17,293 (1969) 14,041 (1968)
2 17,475 17,115 360 21/55 19,035 (1978) 15,831 (1992)
1 17,592 17,543 49 32/55 18,816 (1985) 16,067 (1981)

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Canada
2021 1981-2010 Normal Period of Record from 11-1966
Month Area Mean Departure Rank Maximum (Year) Minimum (Year)
4 8,237 8,647 -411 45/55 9,860 (1979) 6,939 (2010)
3 9,856 10,023 -167 46/55 10,368 (1982) 9,486 (1981)
2 10,373 10,279 94 10/55 10,424 (2013) 10,015 (1981)
1 10,282 10,294 -12 40/55 10,424 (1982) 10,060 (1981)
 
2020 1981-2010 Normal Period of Record from 11-1966
Month Area Mean Departure Rank Maximum (Year) Minimum (Year)
12 10,209 10,096 113 20/55 10,403 (2016) 9,691 (1980)
11 9,545 8,663 882 7/55 9,978 (2018) 7,254 (1987)
10 6,524 4,774 1,750 3/53 6,708 (2018) 3,488 (1987)
9 1,606 1,395 211 19/52 2,812 (2018) 647 (1968)
8 202 375 -174 45/52 1,569 (1978) 132 (2009)
7 190 772 -582 50/51 2,718 (1978) 143 (2012)
6 2,577 3,258 -681 43/53 4,899 (1978) 1,604 (2012)
5 6,246 5,905 341 17/54 7,902 (1974) 4,762 (2010)
4 9,432 8,647 784 15/55 9,860 (1979) 6,939 (2010)
3 10,208 10,023 185 19/55 10,368 (1982) 9,486 (1981)
2 10,346 10,279 66 20/55 10,424 (2013) 10,015 (1981)
1 10,374 10,294 80 9/55 10,424 (1982) 10,060 (1981)
 
2019 1981-2010 Normal Period of Record from 11-1966
Month Area Mean Departure Rank Maximum (Year) Minimum (Year)
12 10,276 10,096 180 12/55 10,403 (2016) 9,691 (1980)
11 9,836 8,663 1,173 3/55 9,978 (2018) 7,254 (1987)
10 5,849 4,774 1,075 8/53 6,708 (2018) 3,488 (1987)
9 1,234 1,395 -161 39/52 2,812 (2018) 647 (1968)
8 321 375 -54 31/52 1,569 (1978) 132 (2009)
7 226 772 -546 49/51 2,718 (1978) 143 (2012)
6 1,933 3,258 -1,326 51/53 4,899 (1978) 1,604 (2012)
5 5,526 5,905 -379 40/54 7,902 (1974) 4,762 (2010)
4 8,364 8,647 -284 40/55 9,860 (1979) 6,939 (2010)
3 10,102 10,023 78 31/55 10,368 (1982) 9,486 (1981)
2 10,390 10,279 111 7/55 10,424 (2013) 10,015 (1981)
1 10,312 10,294 18 29/55 10,424 (1982) 10,060 (1981)
 
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 13/55 10,403 (2016) 9,691 (1980)
11 9,978 8,663 1,315 1/55 9,978 (2018) 7,254 (1987)
10 6,708 4,774 1,934 1/53 6,708 (2018) 3,488 (1987)
9 2,812 1,395 1,417 1/52 2,812 (2018) 647 (1968)
8 424 375 49 22/52 1,569 (1978) 132 (2009)
7 616 772 -156 32/51 2,718 (1978) 143 (2012)
6 2,852 3,258 -407 35/53 4,899 (1978) 1,604 (2012)
5 5,715 5,905 -190 28/54 7,902 (1974) 4,762 (2010)
4 9,745 8,647 1,097 4/55 9,860 (1979) 6,939 (2010)
3 10,312 10,023 289 11/55 10,368 (1982) 9,486 (1981)
2 10,349 10,279 70 19/55 10,424 (2013) 10,015 (1981)
1 10,387 10,294 93 7/55 10,424 (1982) 10,060 (1981)

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Contiguous United States
2021 1981-2010 Normal Period of Record from 11-1966
Month Area Mean Departure Rank Maximum (Year) Minimum (Year)
4 399 730 -331 48/55 1,602 (1975) 209 (1968)
3 1,305 1,918 -613 49/55 3,209 (1969) 906 (1968)
2 4,208 3,105 1,103 5/55 4,910 (1978) 1,972 (1992)
1 3,611 3,535 76 28/55 4,678 (1985) 2,292 (1981)
 
2020 1981-2010 Normal Period of Record from 11-1966
Month Area Mean Departure Rank Maximum (Year) Minimum (Year)
12 2,525 3,061 -536 42/55 4,246 (2009) 1,242 (1980)
11 1,150 1,231 -82 25/55 2,268 (2014) 174 (1999)
10 790 186 604 1/53 790 (2020) 0 (tie)
9 0 8 -8 20-52/52 72 (2019) 0 (tie)
8 0 6 -6 12-52/52 65 (1983) 0 (tie)
7 0 17 -17 24-51/51 84 (1997) 0 (tie)
6 7 55 -48 31/53 268 (1973) 0 (tie)
5 24 167 -143 51/54 527 (1983) 0 (2004)
4 813 730 83 22/55 1,602 (1975) 209 (1968)
3 1,655 1,918 -264 37/55 3,209 (1969) 906 (1968)
2 2,615 3,105 -491 45/55 4,910 (1978) 1,972 (1992)
1 3,383 3,535 -152 35/55 4,678 (1985) 2,292 (1981)
 
2019 1981-2010 Normal Period of Record from 11-1966
Month Area Mean Departure Rank Maximum (Year) Minimum (Year)
12 3,202 3,061 141 20/55 4,246 (2009) 1,242 (1980)
11 1,644 1,231 413 11/55 2,268 (2014) 174 (1999)
10 491 186 305 4/53 790 (2020) 0 (tie)
9 72 8 64 1/52 72 (2019) 0 (tie)
8 0 6 -6 12-52/52 65 (1983) 0 (tie)
7 0 17 -17 24-51/51 84 (1997) 0 (tie)
6 7 55 -48 33/53 268 (1973) 0 (tie)
5 48 167 -119 41/54 527 (1983) 0 (2004)
4 784 730 54 23/55 1,602 (1975) 209 (1968)
3 2,750 1,918 832 6/55 3,209 (1969) 906 (1968)
2 4,226 3,105 1,121 4/55 4,910 (1978) 1,972 (1992)
1 3,653 3,535 118 24/55 4,678 (1985) 2,292 (1981)
 
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 26/55 4,246 (2009) 1,242 (1980)
11 2,153 1,231 921 3/55 2,268 (2014) 174 (1999)
10 177 186 -9 20/53 790 (2020) 0 (tie)
9 0 8 -8 20-52/52 72 (2019) 0 (tie)
8 0 6 -6 12-52/52 65 (1983) 0 (tie)
7 0 17 -17 24-51/51 84 (1997) 0 (tie)
6 0 55 -55 35-53/53 268 (1973) 0 (tie)
5 83 167 -83 37/54 527 (1983) 0 (2004)
4 1,316 730 587 5/55 1,602 (1975) 209 (1968)
3 2,705 1,918 787 7/55 3,209 (1969) 906 (1968)
2 3,363 3,105 258 22/55 4,910 (1978) 1,972 (1992)
1 3,442 3,535 -93 33/55 4,678 (1985) 2,292 (1981)

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Alaska
2021 1981-2010 Normal Period of Record from 11-1966
Month Area Mean Departure Rank Maximum (Year) Minimum (Year)
4 1,499 1,423 77 15/55 1,526 (2018) 1,360 (2016)
3 1,534 1,486 49 1-4/55 1,534 (2008) 1,293 (1968)
2 1,534 1,515 20 1-7/55 1,534 (tie) 1,417 (1968)
1 1,534 1,495 39 1-5/55 1,534 (tie) 1,423 (1986)
 
2020 1981-2010 Normal Period of Record from 11-1966
Month Area Mean Departure Rank Maximum (Year) Minimum (Year)
12 1,534 1,480 54 1-2/55 1,534 (tie) 1,330 (1967)
11 1,475 1,406 69 7/55 1,500 (tie) 950 (1979)
10 755 889 -134 42/53 1,228 (1971) 348 (1979)
9 140 194 -54 34/52 417 (1996) 35 (1974)
8 0 55 -55 42-52/52 546 (1967) 0 (tie)
7 32 74 -42 41/51 445 (1967) 0 (tie)
6 145 329 -184 48/53 856 (1985) 37 (2015)
5 655 1,033 -378 52/54 1,486 (1985) 595 (2016)
4 1,473 1,423 50 25/55 1,526 (2018) 1,360 (2016)
3 1,534 1,486 49 1-4/55 1,534 (2008) 1,293 (1968)
2 1,534 1,515 20 1-7/55 1,534 (tie) 1,417 (1968)
1 1,528 1,495 33 6/55 1,534 (tie) 1,423 (1986)
 
2019 1981-2010 Normal Period of Record from 11-1966
Month Area Mean Departure Rank Maximum (Year) Minimum (Year)
12 1,500 1,480 19 8-25/55 1,534 (tie) 1,330 (1967)
11 1,419 1,406 13 28/55 1,500 (tie) 950 (1979)
10 953 889 64 18/53 1,228 (1971) 348 (1979)
9 106 194 -88 43/52 417 (1996) 35 (1974)
8 0 55 -55 42-52/52 546 (1967) 0 (tie)
7 1 74 -73 48/51 445 (1967) 0 (tie)
6 123 329 -206 51/53 856 (1985) 37 (2015)
5 836 1,033 -198 43/54 1,486 (1985) 595 (2016)
4 1,452 1,423 29 37/55 1,526 (2018) 1,360 (2016)
3 1,513 1,486 27 5/55 1,534 (2008) 1,293 (1968)
2 1,521 1,515 6 28/55 1,534 (tie) 1,417 (1968)
1 1,500 1,495 4 18-39/55 1,534 (tie) 1,423 (1986)
 
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 8-25/55 1,534 (tie) 1,330 (1967)
11 1,403 1,406 -3 35/55 1,500 (tie) 950 (1979)
10 596 889 -293 51/53 1,228 (1971) 348 (1979)
9 82 194 -113 46/52 417 (1996) 35 (1974)
8 52 55 -3 29/52 546 (1967) 0 (tie)
7 41 74 -33 34/51 445 (1967) 0 (tie)
6 305 329 -24 32/53 856 (1985) 37 (2015)
5 987 1,033 -47 33/54 1,486 (1985) 595 (2016)
4 1,526 1,423 104 1/55 1,526 (2018) 1,360 (2016)
3 1,534 1,486 49 1-4/55 1,534 (2008) 1,293 (1968)
2 1,534 1,515 20 1-7/55 1,534 (tie) 1,417 (1968)
1 1,534 1,495 39 1-5/55 1,534 (tie) 1,423 (1986)

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Note: Missing months are July 1968, June-Oct 1969, and July-Sep 1971.