Average annual temperature is 12.6 °C
Absolute maximum temperature: 33.6 °C
Absolute minimum temperature: -11.2 °C
Number of sunny days: 157 days
Number of rainy days: 200 days
Number of snow days: 8 days
Look at detailed online map of Borough of Jefferson Hills
* Weather data for Borough of Jefferson Hills 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) | 17.2 | 21.3 | 21.3 | 28.5 | 30.6 | 33.3 | 32.7 | 31.6 | 33.6 | 28.1 | 19.5 | 16.7 |
| Average daytime temperature (°C) | 8.0 | 11.3 | 10.9 | 19.2 | 22.3 | 26.3 | 28.8 | 27.5 | 24.8 | 18.6 | 11.8 | 9.3 |
| Average temperature (°C) | 3.8 | 4.7 | 5.1 | 12.1 | 15.7 | 20.0 | 23.2 | 21.9 | 19.2 | 13.7 | 6.4 | 5.1 |
| Average night temperature (°C) | 0.8 | -0.1 | 0.7 | 6.4 | 9.6 | 14.5 | 18.9 | 17.4 | 14.6 | 9.7 | 2.3 | 2.0 |
| Absolute minimum temperature (°C) | -6.1 | -11.2 | -7.3 | -1.1 | 1.9 | 10.3 | 15.1 | 12.3 | 9.4 | 1.7 | -6.4 | -4.5 |
| 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 | 15.0 | 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) | 3.0 | 6.8 | 6.0 | 8.6 | 10.4 | 11.0 | 10.9 | 10.6 | 8.7 | 6.4 | 6.7 | 4.2 |
| Precipitation (mm) | 113 | 63 | 106 | 62 | 87 | 129 | 136 | 99 | 61 | 106 | 40 | 72 |
| Sunny days | 8 | 14 | 12 | 15 | 21 | 13 | 3 | 10 | 13 | 17 | 19 | 12 |
| Rainy days | 20 | 13 | 17 | 15 | 10 | 17 | 28 | 21 | 17 | 14 | 10 | 18 |
| Snow days | 3 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Borough of Jefferson Hills during the most sunny months:
The largest precipitation sum in Borough of Jefferson Hills is at