Climatological Data
Copyright © 1996-2024 STORMFAX
Weather in Nantucket the past 48 hours !
Nantucket
Nantucket Harbor WebCam (seasonal)
Steamship Wharf WebCam
Nantucket, MA
NWS/1991-2020 
AVERAGE TEMPERATURE
| Year | Jan | Feb | Mar | Apr | May | June | July | Aug | Sep | Oct | Nov | Dec |
| 50.1 °F |
32.1 |
32.4 |
37.7 |
44.7 |
53.3 |
62.1 |
68.9 |
69.1 |
63.1 |
54.2 |
45.9 |
37.4 |
AVERAGE HIGH TEMPERATURE
| Year | Jan | Feb | Mar | Apr | May | June | July | Aug | Sep | Oct | Nov | Dec |
| 56.9 °F |
39.1 |
39.1 |
44.4 |
51.2 |
60.4 |
69.0 |
75.4 |
75.6 |
70.3 |
61.2 |
52.8 |
44.4 |
AVERAGE LOW TEMPERATURE
| Year | Jan | Feb | Mar | Apr | May | June | July | Aug | Sep | Oct | Nov | Dec |
| 43.2 °F |
25.1 |
25.7 |
31.0 |
38.1 |
46.2 |
55.2 |
62.4 |
62.6 |
55.9 |
47.2 |
38.9 |
30.3 |
AVERAGE PRECIPITATION (Inches)
| Total | Jan | Feb | Mar | Apr | May | June | July | Aug | Sep | Oct | Nov | Dec |
| 37.43" |
4.12 |
2.71 |
3.47 |
3.29 |
3.07 |
2.61 |
2.03 |
2.74 |
2.71 |
2.98 |
3.96 |
3.74 |
AVERAGE DAYS of PRECIPITATION
| Total | Jan | Feb | Mar | Apr | May | June | July | Aug | Sep | Oct | Nov | Dec |
| 77 days | 8 | 8 | 7 | 7 | 6 | 4 | 5 | 7 | 5 | 5 | 7 | 8 |
NORMAL HEATING DEGREE DAYS
| Total | Jan | Feb | Mar | Apr | May | June | July | Aug | Sep | Oct | Nov | Dec |
| 5776 |
1020 |
913 |
846 |
611 |
363 |
119 |
19 |
13 |
98 |
342 |
575 |
857 |
NORMAL COOLING DEGREE DAYS
| Total | Jan | Feb | Mar | Apr | May | June | July | Aug | Sep | Oct | Nov | Dec |
| 361 |
0 |
0 |
0 |
0 |
1 |
32 |
140 |
141 |
40 |
7 |
0 |
0 |
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