Average annual temperature is 13.7 °C
Absolute maximum temperature: 36.7 °C
Absolute minimum temperature: -10.4 °C
Number of sunny days: 182 days
Number of rainy days: 181 days
Number of snow days: 2 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) | 16.9 | 22.0 | 24.5 | 30.6 | 28.9 | 33.6 | 36.7 | 33.3 | 36.2 | 28.0 | 22.6 | 16.5 |
| Average daytime temperature (°C) | 8.7 | 11.1 | 12.1 | 21.2 | 22.9 | 27.2 | 31.8 | 30.1 | 26.1 | 20.3 | 12.5 | 9.5 |
| Average temperature (°C) | 4.8 | 5.4 | 6.1 | 14.2 | 16.2 | 20.8 | 25.3 | 23.9 | 20.4 | 14.6 | 6.9 | 5.2 |
| Average night temperature (°C) | 1.8 | 1.0 | 1.3 | 8.3 | 10.2 | 15.2 | 20.3 | 19.0 | 15.7 | 10.1 | 2.5 | 1.8 |
| Absolute minimum temperature (°C) | -3.2 | -10.4 | -5.9 | 1.6 | 5.1 | 11.2 | 17.7 | 14.6 | 10.6 | 3.7 | -5.7 | -3.7 |
| 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 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.7 | 12.0 | 13.2 | 14.3 | 14.9 | 14.6 | 13.7 | 12.5 | 11.2 | 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) | 4.9 | 7.1 | 7.6 | 9.6 | 10.5 | 11.0 | 11.8 | 11.1 | 8.9 | 8.3 | 7.7 | 5.3 |
| Precipitation (mm) | 56 | 51 | 78 | 128 | 32 | 141 | 104 | 40 | 109 | 37 | 65 | 124 |
| Sunny days | 12 | 16 | 12 | 16 | 16 | 12 | 5 | 13 | 16 | 19 | 25 | 20 |
| Rainy days | 18 | 11 | 19 | 14 | 15 | 18 | 26 | 18 | 14 | 12 | 5 | 11 |
| Snow days | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Jefferson during the most sunny months:
The largest precipitation sum in Jefferson is at