Average annual temperature is 11.6 °C
Absolute maximum temperature: 34.8 °C
Absolute minimum temperature: -18.7 °C
Number of sunny days: 221 days
Number of rainy days: 126 days
Number of snow days: 18 days
Look at detailed online map of Dewey
* Weather data for Dewey 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) | 10.4 | 14.8 | 22.8 | 28.2 | 30.0 | 32.0 | 33.9 | 34.8 | 33.3 | 30.7 | 18.5 | 14.1 |
| Average daytime temperature (°C) | 1.6 | 5.5 | 8.6 | 17.8 | 24.7 | 28.9 | 28.4 | 28.3 | 26.5 | 18.0 | 10.9 | 6.7 |
| Average temperature (°C) | -2.6 | -0.9 | 2.3 | 10.6 | 18.2 | 23.0 | 23.1 | 23.5 | 20.8 | 13.0 | 5.4 | 2.2 |
| Average night temperature (°C) | -5.7 | -5.6 | -2.1 | 4.9 | 12.2 | 17.2 | 18.5 | 19.4 | 15.9 | 8.7 | 1.0 | -1.0 |
| Absolute minimum temperature (°C) | -18.7 | -18.5 | -12.6 | -5.2 | 3.0 | 9.4 | 12.9 | 12.8 | 10.5 | -5.1 | -9.4 | -5.5 |
| 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 | 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 | 9.3 |
| 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) | 5.0 | 7.5 | 7.4 | 9.3 | 11.4 | 12.5 | 11.6 | 11.4 | 10.6 | 7.9 | 7.1 | 4.9 |
| Precipitation (mm) | 40 | 54 | 44 | 51 | 56 | 102 | 138 | 90 | 22 | 55 | 8 | 53 |
| Sunny days | 18 | 18 | 19 | 17 | 17 | 17 | 16 | 17 | 21 | 16 | 24 | 21 |
| Rainy days | 6 | 8 | 11 | 11 | 14 | 13 | 15 | 14 | 9 | 14 | 4 | 7 |
| Snow days | 7 | 2 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 3 |
The best time to visit Dewey during the most sunny months:
The largest precipitation sum in Dewey is at