Average annual temperature is 23.0 °C
Absolute maximum temperature: 36.7 °C
Absolute minimum temperature: 1.5 °C
Number of sunny days: 132 days
Number of rainy days: 233 days
Look at detailed online map of Hartline
* Weather data for Hartline 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) | 28.0 | 32.3 | 32.1 | 34.2 | 36.7 | 34.6 | 36.0 | 35.8 | 34.1 | 30.7 | 31.6 | 28.1 |
| Average daytime temperature (°C) | 23.1 | 27.7 | 28.3 | 30.3 | 31.4 | 31.6 | 33.0 | 33.6 | 32.0 | 28.2 | 25.2 | 21.8 |
| Average temperature (°C) | 16.9 | 20.5 | 21.5 | 23.9 | 24.7 | 26.1 | 27.7 | 28.3 | 26.4 | 23.2 | 19.9 | 17.1 |
| Average night temperature (°C) | 12.3 | 15.3 | 16.0 | 18.8 | 19.5 | 22.0 | 24.1 | 24.5 | 22.6 | 19.2 | 15.9 | 13.9 |
| Absolute minimum temperature (°C) | 1.5 | 6.9 | 7.2 | 13.3 | 14.6 | 19.7 | 22.5 | 23.1 | 19.0 | 11.1 | 6.3 | 6.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.6 | 11.2 | 12.0 | 12.8 | 13.5 | 13.9 | 13.7 | 13.1 | 12.3 | 11.5 | 10.8 | 10.4 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 8.5 | 9.6 | 10.0 | 10.2 | 11.7 | 11.2 | 10.7 | 11.1 | 10.2 | 9.5 | 7.7 | 6.9 |
| Precipitation (mm) | 29 | 16 | 33 | 95 | 108 | 188 | 178 | 144 | 142 | 45 | 31 | 82 |
| Sunny days | 20 | 19 | 15 | 7 | 10 | 2 | 1 | 2 | 5 | 18 | 15 | 18 |
| Rainy days | 11 | 9 | 16 | 23 | 21 | 28 | 30 | 29 | 25 | 13 | 15 | 13 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Hartline is at