Average annual temperature is 14.7 °C
Absolute maximum temperature: 38.7 °C
Absolute minimum temperature: -10.8 °C
Number of sunny days: 203 days
Number of rainy days: 158 days
Number of snow days: 4 days
Look at detailed online map of Hartwell
* Weather data for Hartwell 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 | 20.6 | 24.6 | 27.6 | 32.0 | 38.7 | 37.2 | 37.9 | 35.0 | 31.1 | 25.2 | 17.3 |
| Average daytime temperature (°C) | 8.1 | 11.5 | 12.9 | 20.8 | 26.2 | 30.6 | 32.3 | 32.0 | 28.7 | 20.9 | 14.8 | 10.5 |
| Average temperature (°C) | 2.7 | 4.4 | 6.8 | 13.6 | 19.6 | 24.2 | 26.1 | 26.0 | 22.2 | 15.4 | 8.5 | 5.9 |
| Average night temperature (°C) | -1.3 | -0.6 | 2.4 | 7.5 | 14.0 | 18.5 | 21.3 | 21.5 | 16.9 | 11.2 | 3.8 | 2.7 |
| Absolute minimum temperature (°C) | -10.8 | -10.7 | -7.3 | 0.9 | 5.3 | 11.7 | 16.3 | 14.9 | 11.8 | -2.1 | -5.5 | -3.8 |
| 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 | 10.8 | 12.0 | 13.2 | 14.3 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.5 |
| 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) | 6.0 | 7.5 | 7.3 | 10.7 | 10.4 | 12.8 | 11.1 | 11.2 | 10.5 | 7.8 | 7.4 | 5.2 |
| Precipitation (mm) | 76 | 62 | 106 | 21 | 48 | 43 | 57 | 53 | 36 | 56 | 23 | 108 |
| Sunny days | 17 | 15 | 12 | 23 | 14 | 18 | 11 | 20 | 17 | 19 | 22 | 15 |
| Rainy days | 11 | 12 | 19 | 7 | 17 | 12 | 20 | 11 | 13 | 12 | 8 | 16 |
| Snow days | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Hartwell during the most sunny months:
The largest precipitation sum in Hartwell is at