Average annual temperature is 12.5 °C
Absolute maximum temperature: 33.9 °C
Absolute minimum temperature: -12.2 °C
Number of sunny days: 172 days
Number of rainy days: 183 days
Number of snow days: 10 days
Look at detailed online map of Jefferson
* Weather data for Jefferson 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) | 17.1 | 19.3 | 19.3 | 26.6 | 30.6 | 32.2 | 33.9 | 33.6 | 31.8 | 29.3 | 23.3 | 14.9 |
| Average daytime temperature (°C) | 5.5 | 9.4 | 10.1 | 17.8 | 23.5 | 27.5 | 28.6 | 27.3 | 25.4 | 18.6 | 11.6 | 8.1 |
| Average temperature (°C) | 1.8 | 3.3 | 4.4 | 11.1 | 17.2 | 21.4 | 23.4 | 22.4 | 20.0 | 13.7 | 6.3 | 4.2 |
| Average night temperature (°C) | -0.9 | -1.0 | 0.0 | 5.6 | 11.4 | 15.7 | 18.5 | 17.8 | 15.1 | 9.7 | 2.1 | 1.3 |
| Absolute minimum temperature (°C) | -11.2 | -12.2 | -8.5 | -2.9 | 2.1 | 9.6 | 14.1 | 11.6 | 9.8 | -3.6 | -9.6 | -7.5 |
| 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 | 11.9 | 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) | 3.5 | 7.3 | 6.5 | 9.0 | 10.7 | 11.3 | 12.4 | 10.9 | 10.1 | 7.0 | 7.8 | 4.3 |
| Precipitation (mm) | 82 | 82 | 122 | 93 | 66 | 34 | 89 | 94 | 37 | 90 | 23 | 61 |
| Sunny days | 7 | 16 | 13 | 16 | 17 | 17 | 6 | 14 | 18 | 15 | 21 | 12 |
| Rainy days | 18 | 12 | 16 | 14 | 14 | 13 | 25 | 17 | 12 | 16 | 8 | 18 |
| Snow days | 6 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Jefferson during the most sunny months:
The largest precipitation sum in Jefferson is at