Average annual temperature is 11.4 °C
Absolute maximum temperature: 33.3 °C
Absolute minimum temperature: -11.2 °C
Number of sunny days: 162 days
Number of rainy days: 184 days
Number of snow days: 19 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) | 15.5 | 19.9 | 19.3 | 26.7 | 29.2 | 31.8 | 33.3 | 30.1 | 31.8 | 27.6 | 17.8 | 15.4 |
| Average daytime temperature (°C) | 5.6 | 9.6 | 9.1 | 17.3 | 21.4 | 25.2 | 28.2 | 26.6 | 23.7 | 17.1 | 10.2 | 8.1 |
| Average temperature (°C) | 1.7 | 2.8 | 3.5 | 10.6 | 14.8 | 19.3 | 22.6 | 20.9 | 18.5 | 12.6 | 5.2 | 4.1 |
| Average night temperature (°C) | -1.2 | -1.8 | -0.6 | 5.2 | 9.0 | 13.9 | 17.8 | 16.4 | 14.1 | 8.7 | 1.5 | 1.5 |
| Absolute minimum temperature (°C) | -9.2 | -11.2 | -7.9 | -3.8 | 1.6 | 8.6 | 13.8 | 11.5 | 7.9 | -2.2 | -7.6 | -4.6 |
| 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 | 15.0 | 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) | 2.8 | 6.7 | 6.7 | 9.1 | 10.9 | 11.0 | 11.8 | 10.9 | 8.6 | 6.6 | 6.6 | 4.0 |
| Precipitation (mm) | 138 | 80 | 112 | 101 | 60 | 121 | 115 | 141 | 59 | 70 | 41 | 62 |
| Sunny days | 7 | 14 | 13 | 14 | 21 | 15 | 8 | 11 | 14 | 16 | 19 | 10 |
| Rainy days | 16 | 11 | 13 | 16 | 10 | 15 | 23 | 20 | 16 | 15 | 9 | 20 |
| Snow days | 8 | 3 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 |
The best time to visit Jefferson during the most sunny months:
The largest precipitation sum in Jefferson is at