Average annual temperature is 8.7 °C
Absolute maximum temperature: 32.3 °C
Absolute minimum temperature: -29.9 °C
Number of sunny days: 151 days
Number of rainy days: 181 days
Number of snow days: 33 days
Look at detailed online map of Town of Dedham
* Weather data for Town of Dedham 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) | 9.4 | 10.7 | 11.0 | 20.8 | 30.0 | 32.3 | 30.1 | 26.1 | 30.3 | 26.1 | 12.8 | 13.0 |
| Average daytime temperature (°C) | 2.5 | 0.4 | 5.2 | 12.2 | 18.2 | 20.4 | 26.0 | 23.0 | 22.6 | 16.7 | 6.2 | 3.7 |
| Average temperature (°C) | -1.6 | -4.9 | 0.6 | 6.9 | 12.4 | 15.7 | 21.7 | 19.0 | 17.9 | 12.6 | 2.2 | 0.2 |
| Average night temperature (°C) | -5.3 | -10.3 | -3.4 | 2.7 | 7.4 | 12.3 | 18.5 | 15.7 | 14.3 | 9.6 | -0.9 | -2.9 |
| Absolute minimum temperature (°C) | -14.9 | -29.9 | -10.5 | -4.5 | 1.8 | 5.9 | 14.6 | 12.1 | 8.4 | 0.5 | -7.3 | -12.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.3 | 10.4 | 11.9 | 13.5 | 14.8 | 15.5 | 15.2 | 14.0 | 12.5 | 11.0 | 9.6 | 8.9 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 4.0 | 6.7 | 7.0 | 7.9 | 11.1 | 6.5 | 9.1 | 9.2 | 8.7 | 6.2 | 6.5 | 4.1 |
| Precipitation (mm) | 195 | 34 | 76 | 56 | 121 | 195 | 176 | 136 | 108 | 156 | 58 | 176 |
| Sunny days | 10 | 13 | 11 | 15 | 17 | 5 | 6 | 7 | 18 | 12 | 20 | 17 |
| Rainy days | 10 | 5 | 10 | 15 | 14 | 25 | 25 | 24 | 12 | 19 | 9 | 13 |
| Snow days | 11 | 10 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Town of Dedham during the most sunny months:
Months with the longest average daylight duration in Town of Dedham:
The largest precipitation sum in Town of Dedham is at