NJ Monthly/Annual Normals (1991-2020)
Heating Degree Days (number of degrees the average daily temperature is below 65°F)
| STATION NAME |
JAN |
FEB |
MAR |
APR |
MAY |
JUN |
JUL |
AUG |
SEP |
OCT |
NOV |
DEC |
ANN |
| STATION NAME |
JAN |
FEB |
MAR |
APR |
MAY |
JUN |
JUL |
AUG |
SEP |
OCT |
NOV |
DEC |
ANN |
| Aeroflex-Andover Airport |
1165 |
997 |
842 |
470 |
205 |
38 |
4 |
11 |
108 |
400 |
690 |
998 |
5926 |
| Atlantic City Intl Airport |
956 |
812 |
695 |
387 |
155 |
22 |
0 |
1 |
43 |
270 |
546 |
814 |
4701 |
| Atlantic City Marina |
907 |
778 |
693 |
413 |
174 |
20 |
0 |
0 |
22 |
201 |
480 |
749 |
4438 |
| Belvidere Bridge |
1170 |
1002 |
868 |
502 |
230 |
47 |
4 |
8 |
98 |
401 |
711 |
1008 |
6050 |
| Boonton |
1113 |
955 |
820 |
451 |
191 |
26 |
1 |
4 |
83 |
371 |
664 |
952 |
5631 |
| Caldwell Essex County Airport |
1066 |
906 |
764 |
417 |
160 |
24 |
1 |
3 |
65 |
329 |
618 |
919 |
5272 |
| Canoe Brook |
1063 |
913 |
769 |
415 |
168 |
25 |
1 |
3 |
59 |
328 |
615 |
904 |
5262 |
| Cape May |
902 |
776 |
665 |
367 |
133 |
13 |
0 |
0 |
22 |
207 |
488 |
758 |
4332 |
| Charlotteburg Reservoir |
1170 |
1008 |
871 |
509 |
228 |
51 |
6 |
13 |
108 |
404 |
700 |
995 |
6065 |
| Estell Manor |
989 |
834 |
708 |
385 |
153 |
25 |
1 |
2 |
52 |
301 |
570 |
845 |
4863 |
| Flemington |
1110 |
942 |
797 |
440 |
184 |
32 |
2 |
5 |
77 |
362 |
652 |
946 |
5547 |
| Freehold |
1014 |
848 |
733 |
401 |
167 |
26 |
1 |
3 |
56 |
310 |
572 |
857 |
4988 |
| Hammonton |
996 |
844 |
727 |
391 |
149 |
19 |
0 |
1 |
44 |
287 |
575 |
845 |
4880 |
| Hightstown |
1055 |
900 |
766 |
431 |
184 |
32 |
2 |
5 |
72 |
344 |
626 |
897 |
5314 |
| Indian Mills |
1000 |
848 |
717 |
382 |
150 |
23 |
0 |
3 |
60 |
304 |
592 |
862 |
4940 |
| Lambertville |
1077 |
897 |
752 |
410 |
152 |
27 |
1 |
5 |
65 |
344 |
629 |
917 |
5277 |
| Long Branch |
982 |
854 |
752 |
456 |
200 |
31 |
1 |
1 |
45 |
285 |
557 |
823 |
4986 |
| Millville Municipal Airport |
992 |
851 |
718 |
396 |
159 |
22 |
0 |
2 |
51 |
299 |
586 |
859 |
4934 |
| New Brunswick |
1035 |
885 |
751 |
411 |
164 |
24 |
1 |
2 |
54 |
314 |
590 |
871 |
5101 |
| Newark Liberty Intl Airport |
1000 |
837 |
697 |
363 |
124 |
14 |
0 |
1 |
33 |
253 |
542 |
837 |
4701 |
| Pennsauken |
1026 |
869 |
728 |
394 |
152 |
20 |
0 |
2 |
50 |
311 |
602 |
870 |
5022 |
| Philadelphia/Mt Holly WFO |
1065 |
907 |
765 |
412 |
164 |
22 |
1 |
2 |
62 |
340 |
633 |
907 |
5279 |
| Seabrook Farms |
990 |
836 |
706 |
378 |
142 |
18 |
0 |
1 |
42 |
277 |
554 |
840 |
4784 |
| Somerville |
1086 |
908 |
772 |
427 |
178 |
28 |
1 |
4 |
71 |
352 |
633 |
925 |
5385 |
| South Jersey Regional Airport (Lumberton) |
998 |
844 |
700 |
386 |
147 |
18 |
0 |
2 |
52 |
298 |
578 |
857 |
4880 |
| Sussex |
1215 |
1037 |
893 |
522 |
240 |
54 |
6 |
14 |
129 |
429 |
723 |
1049 |
6312 |
| Teterboro Airport |
998 |
843 |
704 |
369 |
124 |
12 |
0 |
1 |
36 |
261 |
544 |
842 |
4735 |
| Trenton-Mercer Airport |
1023 |
858 |
722 |
387 |
148 |
20 |
0 |
2 |
51 |
304 |
588 |
873 |
4977 |
| Wertsville |
1086 |
927 |
785 |
429 |
179 |
31 |
1 |
5 |
75 |
346 |
628 |
918 |
5411 |