Average annual temperature is 16.1 °C
Absolute maximum temperature: 35.6 °C
Absolute minimum temperature: -5.7 °C
Number of sunny days: 179 days
Number of rainy days: 185 days
Number of snow days: 1 day
Look at detailed online map of Boston
* Weather data for Boston United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 20.2 | 23.7 | 23.0 | 28.3 | 26.6 | 29.4 | 35.6 | 35.2 | 35.0 | 27.3 | 24.6 | 19.2 |
| Average daytime temperature (°C) | 11.8 | 12.7 | 13.6 | 20.6 | 21.1 | 25.8 | 31.0 | 29.9 | 26.9 | 21.6 | 14.9 | 12.4 |
| Average temperature (°C) | 8.1 | 8.7 | 9.3 | 15.7 | 17.2 | 21.7 | 26.8 | 25.7 | 23.0 | 17.2 | 10.6 | 8.5 |
| Average night temperature (°C) | 4.9 | 4.9 | 5.5 | 12.0 | 13.9 | 18.3 | 23.5 | 22.6 | 19.7 | 13.6 | 7.0 | 5.3 |
| Absolute minimum temperature (°C) | -0.2 | -5.7 | -0.3 | 4.1 | 8.0 | 12.5 | 19.8 | 18.9 | 15.0 | 4.8 | -1.0 | -2.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.5 | 13.6 | 12.4 | 11.2 | 10.2 | 9.6 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.1 | 7.2 | 8.5 | 9.7 | 10.8 | 11.8 | 12.2 | 10.6 | 9.6 | 9.1 | 7.8 | 6.3 |
| Precipitation (mm) | 85 | 63 | 55 | 140 | 71 | 123 | 98 | 86 | 121 | 34 | 52 | 121 |
| Sunny days | 13 | 16 | 16 | 16 | 16 | 10 | 5 | 11 | 14 | 20 | 24 | 18 |
| Rainy days | 18 | 11 | 15 | 14 | 15 | 20 | 26 | 20 | 16 | 11 | 6 | 13 |
| Snow days | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Boston during the most sunny months:
The largest precipitation sum in Boston is at