Average annual temperature is 12.0 °C
Absolute maximum temperature: 32.2 °C
Absolute minimum temperature: -22.3 °C
Number of sunny days: 167 days
Number of rainy days: 194 days
Number of snow days: 4 days
Look at detailed online map of Town of Dartmouth
* Weather data for Town of Dartmouth 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) | 13.8 | 18.5 | 14.1 | 28.9 | 26.8 | 26.2 | 31.3 | 30.3 | 32.2 | 27.2 | 17.7 | 15.8 |
| Average daytime temperature (°C) | 7.5 | 6.7 | 8.5 | 15.2 | 19.0 | 22.3 | 27.7 | 25.8 | 23.0 | 18.9 | 10.5 | 8.6 |
| Average temperature (°C) | 4.0 | 2.3 | 4.4 | 10.6 | 14.1 | 17.7 | 23.3 | 21.6 | 19.1 | 14.4 | 6.2 | 5.1 |
| Average night temperature (°C) | 0.7 | -1.8 | 0.6 | 6.7 | 9.9 | 14.2 | 19.9 | 18.1 | 16.2 | 11.1 | 2.3 | 2.0 |
| Absolute minimum temperature (°C) | -4.5 | -22.3 | -3.4 | -2.0 | 3.8 | 8.9 | 15.7 | 14.0 | 9.9 | 5.5 | -3.9 | -6.1 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.1 | 6.1 | 7.4 | 8.7 | 11.8 | 10.3 | 11.1 | 10.2 | 7.6 | 7.9 | 7.4 | 5.4 |
| Precipitation (mm) | 214 | 66 | 105 | 66 | 88 | 116 | 173 | 123 | 183 | 82 | 31 | 170 |
| Sunny days | 9 | 12 | 16 | 17 | 20 | 11 | 8 | 12 | 13 | 13 | 22 | 14 |
| Rainy days | 22 | 13 | 15 | 13 | 11 | 19 | 23 | 19 | 17 | 18 | 8 | 16 |
| Snow days | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Town of Dartmouth during the most sunny months:
The largest precipitation sum in Town of Dartmouth is at