Boston, MA
Climate overview — based on NOAA 1991-2020 normals from BOSTON LOGAN INTL AP, MA US.
Year-round temperatures (°F)
Climate summary
Boston has an annual average temperature of 51.9°F with about 43.6 inches of precipitation per year and 49.2 inches of snow. The warmest month is July (average high 82.1°F), and the coldest is January (average low 23.1°F). December is typically the wettest month (4.30 in) and February the driest (3.21 in). Snow typically falls from October through April.
Best time to visit Boston
Full guide →Climate change signal
All-time records →56 of 366 (15.3%) of Boston's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1930s | 10 | |
| 1940s | 59 | |
| 1950s | 43 | |
| 1960s | 25 | |
| 1970s | 32 | |
| 1980s | 34 | |
| 1990s | 51 | |
| 2000s | 34 | |
| 2010s | 45 | |
| 2020s | 33 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 36.8°F | 23.1°F | 29.9°F | 3.39 in | 14.3 in | 12 |
| February | 39.0°F | 24.6°F | 31.8°F | 3.21 in | 14.4 in | 11 |
| March | 45.5°F | 31.1°F | 38.3°F | 4.17 in | 9.0 in | 12 |
| April | 56.4°F | 40.8°F | 48.6°F | 3.63 in | 1.6 in | 12 |
| May | 66.5°F | 50.3°F | 58.4°F | 3.25 in | — | 12 |
| June | 76.2°F | 59.7°F | 68.0°F | 3.89 in | — | 11 |
| July | 82.1°F | 66.0°F | 74.1°F | 3.27 in | — | 9 |
| August | 80.4°F | 65.1°F | 72.7°F | 3.23 in | — | 9 |
| September | 73.1°F | 58.2°F | 65.6°F | 3.56 in | — | 9 |
| October | 62.1°F | 47.5°F | 54.8°F | 4.03 in | 0.2 in | 11 |
| November | 51.6°F | 37.9°F | 44.7°F | 3.66 in | 0.7 in | 10 |
| December | 42.2°F | 29.2°F | 35.7°F | 4.30 in | 9.0 in | 12 |
Climate twins of Boston
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).