Average annual temperature is 13.4 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: -11.3 °C
Number of sunny days: 180 days
Number of rainy days: 181 days
Number of snow days: 4 days
Look at detailed online map of Somerville
* Weather data for Somerville 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) | 17.0 | 18.7 | 17.4 | 30.3 | 29.3 | 35.2 | 34.2 | 32.1 | 35.1 | 27.3 | 20.3 | 15.5 |
| Average daytime temperature (°C) | 8.9 | 9.5 | 11.3 | 19.8 | 22.7 | 27.3 | 30.7 | 28.7 | 25.1 | 20.1 | 11.8 | 9.3 |
| Average temperature (°C) | 5.0 | 4.4 | 5.6 | 13.6 | 16.2 | 20.9 | 25.0 | 23.4 | 20.0 | 14.6 | 6.7 | 5.1 |
| Average night temperature (°C) | 1.7 | 0.1 | 0.8 | 8.6 | 10.3 | 15.5 | 20.4 | 19.1 | 16.0 | 10.3 | 2.3 | 1.5 |
| Absolute minimum temperature (°C) | -4.3 | -11.3 | -4.6 | 0.8 | 4.4 | 10.7 | 16.9 | 15.1 | 11.1 | 4.1 | -4.8 | -4.5 |
| 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 | 15.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 9.4 |
| 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) | 4.7 | 7.0 | 7.4 | 9.1 | 11.5 | 10.6 | 11.7 | 10.4 | 8.3 | 8.3 | 7.7 | 5.1 |
| Precipitation (mm) | 103 | 52 | 93 | 129 | 58 | 108 | 127 | 75 | 175 | 44 | 71 | 167 |
| Sunny days | 13 | 16 | 12 | 15 | 20 | 12 | 7 | 13 | 14 | 20 | 21 | 17 |
| Rainy days | 18 | 10 | 18 | 15 | 11 | 18 | 24 | 18 | 16 | 11 | 8 | 14 |
| Snow days | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
The best time to visit Somerville during the most sunny months:
The largest precipitation sum in Somerville is at