Average annual temperature is 16.2 °C
Absolute maximum temperature: 42.7 °C
Absolute minimum temperature: 0.6 °C
Number of sunny days: 270 days
Number of rainy days: 95 days
Look at detailed online map of Hartley
* Weather data for Hartley 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) | 18.2 | 19.8 | 18.8 | 33.2 | 34.4 | 39.2 | 42.7 | 40.8 | 34.3 | 35.0 | 26.2 | 18.7 |
| Average daytime temperature (°C) | 13.6 | 14.0 | 14.5 | 22.6 | 24.9 | 28.7 | 35.9 | 35.3 | 29.8 | 27.0 | 19.3 | 15.6 |
| Average temperature (°C) | 9.1 | 8.4 | 9.2 | 14.8 | 17.1 | 20.0 | 25.2 | 25.4 | 21.0 | 19.0 | 13.5 | 10.8 |
| Average night temperature (°C) | 6.1 | 4.3 | 5.5 | 8.7 | 11.0 | 12.9 | 16.2 | 17.7 | 14.5 | 13.1 | 8.8 | 7.1 |
| Absolute minimum temperature (°C) | 1.8 | 0.6 | 1.1 | 2.7 | 6.1 | 10.6 | 10.8 | 13.4 | 10.5 | 5.9 | 3.6 | 2.0 |
| 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) | 5.5 | 7.6 | 7.6 | 11.3 | 11.9 | 13.4 | 13.4 | 12.3 | 11.3 | 9.5 | 7.9 | 5.8 |
| Precipitation (mm) | 303 | 86 | 226 | 4 | 19 | 1 | 0 | 1 | 2 | 17 | 38 | 122 |
| Sunny days | 11 | 17 | 10 | 27 | 24 | 29 | 31 | 29 | 27 | 26 | 22 | 17 |
| Rainy days | 20 | 11 | 21 | 3 | 7 | 1 | 0 | 2 | 3 | 5 | 8 | 14 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Hartley during the most sunny months:
The largest precipitation sum in Hartley is at