Average annual temperature is 9.9 °C
Absolute maximum temperature: 33.3 °C
Absolute minimum temperature: -20.6 °C
Number of sunny days: 164 days
Number of rainy days: 174 days
Number of snow days: 27 days
Look at detailed online map of Dean
* Weather data for Dean 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) | 7.1 | 11.1 | 12.0 | 27.0 | 32.7 | 33.1 | 33.3 | 31.8 | 32.1 | 28.9 | 16.0 | 14.5 |
| Average daytime temperature (°C) | 2.1 | 3.3 | 5.1 | 15.0 | 21.6 | 26.9 | 27.2 | 24.8 | 22.9 | 16.0 | 8.0 | 6.2 |
| Average temperature (°C) | -0.9 | -1.7 | 0.6 | 8.8 | 14.3 | 20.1 | 21.6 | 19.4 | 17.8 | 11.7 | 3.4 | 3.0 |
| Average night temperature (°C) | -3.4 | -5.6 | -3.3 | 3.3 | 7.7 | 13.9 | 16.5 | 14.8 | 13.4 | 8.4 | -0.1 | 0.7 |
| Absolute minimum temperature (°C) | -20.6 | -18.5 | -8.4 | -5.5 | 1.2 | 8.4 | 12.8 | 8.0 | 7.0 | -2.3 | -8.0 | -5.6 |
| 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) | 9.4 | 10.5 | 11.9 | 13.4 | 14.7 | 15.4 | 15.1 | 13.9 | 12.5 | 11.0 | 9.7 | 9.0 |
| Daylight minimum duration (h) | 9.0 | 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) | 2.9 | 6.0 | 6.7 | 8.4 | 10.7 | 11.9 | 12.0 | 10.2 | 8.1 | 6.1 | 5.9 | 3.5 |
| Precipitation (mm) | 59 | 79 | 73 | 97 | 27 | 55 | 156 | 91 | 29 | 82 | 46 | 68 |
| Sunny days | 11 | 12 | 9 | 13 | 21 | 17 | 5 | 14 | 15 | 10 | 21 | 16 |
| Rainy days | 13 | 10 | 12 | 17 | 10 | 13 | 26 | 17 | 15 | 21 | 6 | 14 |
| Snow days | 7 | 6 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 1 |
The best time to visit Dean during the most sunny months:
Months with the longest average daylight duration in Dean:
The largest precipitation sum in Dean is at