US Geography / US Weather / Massachusetts Weather / Williamstown |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 28 | 31 | 40 | 54 | 66 | 74 | 78 | 77 | 68 | 58 | 45 | 34 |
| Avg. Low | 7 | 8 | 18 | 31 | 41 | 48 | 54 | 52 | 45 | 35 | 27 | 15 |
| Mean | 18 | 20 | 30 | 42 | 54 | 62 | 67 | 65 | 58 | 47 | 37 | 24 |
| Avg. Precip. | 3.5 in | 3.4 in | 3.9 in | 4.3 in | 4.6 in | 4.5 in | 4.1 in | 4.3 in | 3.8 in | 3.8 in | 4.6 in | 4.3 in |
Degrees in Fahrenheit
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