Average annual temperature is 8.4 °C
Absolute maximum temperature: 36.7 °C
Absolute minimum temperature: -18.0 °C
Number of sunny days: 232 days
Number of rainy days: 75 days
Number of snow days: 58 days
Look at detailed online map of Heiner
* Weather data for Heiner 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) | 2.0 | 2.0 | 7.8 | 22.8 | 26.0 | 29.8 | 36.7 | 31.7 | 29.4 | 22.6 | 15.1 | 4.8 |
| Average daytime temperature (°C) | -2.8 | -2.2 | 0.5 | 9.8 | 21.4 | 25.3 | 32.7 | 28.8 | 24.2 | 16.4 | 7.2 | 1.8 |
| Average temperature (°C) | -5.3 | -5.9 | -3.5 | 4.2 | 14.8 | 18.6 | 25.6 | 22.6 | 17.8 | 10.1 | 3.0 | -2.4 |
| Average night temperature (°C) | -7.8 | -9.9 | -7.1 | -0.3 | 7.9 | 11.6 | 17.7 | 16.2 | 11.5 | 4.6 | -0.9 | -6.1 |
| Absolute minimum temperature (°C) | -18.0 | -15.9 | -13.8 | -10.8 | 0.0 | 6.3 | 12.9 | 12.5 | 3.0 | -5.8 | -14.2 | -12.7 |
| 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) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 14.9 | 14.7 | 13.7 | 12.5 | 11.2 | 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) | 5.7 | 8.2 | 8.5 | 11.7 | 12.7 | 13.0 | 13.1 | 12.2 | 11.0 | 9.8 | 8.4 | 7.7 |
| Precipitation (mm) | 97 | 22 | 78 | 5 | 27 | 23 | 1 | 23 | 4 | 31 | 19 | 11 |
| Sunny days | 10 | 16 | 10 | 22 | 16 | 14 | 29 | 17 | 21 | 27 | 25 | 25 |
| Rainy days | 2 | 0 | 4 | 5 | 15 | 16 | 2 | 14 | 9 | 4 | 3 | 1 |
| Snow days | 19 | 12 | 17 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 |
The best time to visit Heiner during the most sunny months:
The largest precipitation sum in Heiner is at