Boston Climate: Weather by Month and Best Time to Visit
Best months for Boston: July, August, September, June.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 7°C | 3°C | 49 mm | 11 | – | – | 5.1 |
| February | 8°C | 3°C | 38 mm | 9 | – | – | 5.5 |
| March | 10°C | 4°C | 42 mm | 10 | – | – | 5.8 |
| April | 12°C | 6°C | 46 mm | 11 | – | – | 6.1 |
| May | 15°C | 8°C | 50 mm | 10 | – | – | 6.7 |
| June | 18°C | 11°C | 61 mm | 11 | – | – | 7.0 |
| July | 21°C | 13°C | 62 mm | 11 | – | – | 7.4 |
| August | 21°C | 13°C | 63 mm | 11 | – | – | 7.4 |
| September | 18°C | 11°C | 55 mm | 10 | – | – | 7.2 |
| October | 14°C | 8°C | 60 mm | 11 | – | – | 6.4 |
| November | 10°C | 5°C | 55 mm | 11 | – | – | 5.7 |
| December | 7°C | 3°C | 51 mm | 11 | – | – | 5.3 |