Temperature
Cool by day, cold at night.
Boston is usually most comfortable in May and September. Typical daytime highs range from 37–80°F across the year. Rain varies by season.
Cool by day, cold at night.
Several rainy days. About 9 wet days, fewer than in most months.
Good sunshine this month.
Humidity is rarely noticeable in the cool air.
In November, afternoons feel about 41° and nights feel near 33°.
Partly cloudy skies this month.
Breezy November days can feel brisker in open spots.
November late afternoons are around 48°F, easing to about 45°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 37 | 25 | 3.9 | 10 | 6.4 | 67 |
| Feb | 39 | 26 | 3.4 | 10 | 7.3 | 65 |
| Mar | 46 | 33 | 4.4 | 11 | 8.0 | 65 |
| Apr | 55 | 42 | 4.1 | 11 | 9.1 | 66 |
| May | 65 | 51 | 3.4 | 11 | 10.0 | 71 |
| Jun | 74 | 60 | 3.5 | 11 | 11.0 | 74 |
| Jul | 80 | 67 | 3.1 | 10 | 11.6 | 74 |
| Aug | 79 | 65 | 3.3 | 10 | 10.8 | 75 |
| Sep | 72 | 60 | 3.4 | 8 | 9.1 | 76 |
| Oct | 62 | 49 | 4.3 | 10 | 7.7 | 74 |
| Nov | 51 | 39 | 3.3 | 9 | 6.4 | 70 |
| Dec | 42 | 31 | 4.5 | 11 | 5.8 | 70 |
Similar climates
Want a side-by-side climate view? Compare Boston with Washington DC.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Aug 28, 2026
Data & methodology