Average annual temperature is 12.7 °C
Absolute maximum temperature: 33.2 °C
Absolute minimum temperature: -11.5 °C
Number of sunny days: 146 days
Number of rainy days: 210 days
Number of snow days: 9 days
Look at detailed online map of Borough of Jefferson
* Weather data for Borough of 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) | 17.9 | 21.8 | 22.1 | 28.9 | 29.8 | 33.2 | 32.4 | 31.8 | 32.6 | 27.2 | 19.7 | 17.3 |
| Average daytime temperature (°C) | 8.7 | 11.9 | 11.5 | 19.4 | 22.3 | 26.3 | 28.8 | 27.3 | 24.5 | 18.6 | 12.1 | 9.7 |
| Average temperature (°C) | 4.1 | 5.2 | 5.4 | 12.4 | 15.7 | 19.9 | 23.2 | 21.9 | 19.0 | 13.6 | 6.5 | 5.3 |
| Average night temperature (°C) | 0.9 | 0.4 | 0.8 | 6.6 | 9.6 | 14.2 | 18.8 | 17.3 | 14.5 | 9.6 | 2.2 | 2.0 |
| Absolute minimum temperature (°C) | -6.0 | -11.5 | -7.8 | -1.2 | 2.5 | 9.1 | 15.1 | 11.9 | 9.2 | 1.7 | -6.8 | -4.9 |
| 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 | 12.0 | 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) | 3.1 | 6.8 | 6.6 | 8.7 | 10.3 | 11.1 | 10.9 | 10.4 | 8.7 | 6.7 | 6.8 | 4.4 |
| Precipitation (mm) | 113 | 67 | 100 | 46 | 86 | 127 | 138 | 103 | 59 | 104 | 50 | 67 |
| Sunny days | 9 | 13 | 12 | 14 | 18 | 11 | 6 | 7 | 12 | 11 | 21 | 12 |
| Rainy days | 19 | 13 | 17 | 16 | 13 | 19 | 25 | 24 | 18 | 20 | 8 | 18 |
| Snow days | 3 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Borough of Jefferson during the most sunny months:
The largest precipitation sum in Borough of Jefferson is at