Average annual temperature is 17.1 °C
Absolute maximum temperature: 39.7 °C
Absolute minimum temperature: -8.2 °C
Number of sunny days: 221 days
Number of rainy days: 144 days
Look at detailed online map of Heyburn
* Weather data for Heyburn 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) | 20.2 | 22.5 | 26.4 | 29.3 | 32.4 | 38.1 | 38.7 | 39.7 | 35.9 | 31.1 | 27.1 | 21.4 |
| Average daytime temperature (°C) | 12.0 | 13.8 | 16.7 | 21.7 | 26.6 | 31.8 | 34.2 | 34.8 | 30.7 | 22.7 | 17.2 | 12.9 |
| Average temperature (°C) | 6.2 | 7.1 | 10.5 | 15.3 | 20.8 | 25.8 | 28.1 | 28.7 | 24.9 | 17.6 | 11.2 | 7.7 |
| Average night temperature (°C) | 2.1 | 2.7 | 6.1 | 10.1 | 16.0 | 20.6 | 23.3 | 23.8 | 20.0 | 13.4 | 6.7 | 3.9 |
| Absolute minimum temperature (°C) | -8.2 | -6.2 | -4.9 | 4.8 | 7.1 | 16.8 | 18.3 | 17.6 | 16.4 | -0.6 | -3.0 | -2.4 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.6 | 6.8 | 7.1 | 9.6 | 9.8 | 12.0 | 11.5 | 11.9 | 10.4 | 8.1 | 7.7 | 6.7 |
| Precipitation (mm) | 55 | 92 | 110 | 75 | 145 | 90 | 104 | 56 | 62 | 119 | 47 | 79 |
| Sunny days | 21 | 16 | 17 | 17 | 10 | 16 | 17 | 20 | 20 | 18 | 26 | 23 |
| Rainy days | 10 | 12 | 14 | 13 | 21 | 14 | 14 | 11 | 10 | 13 | 4 | 8 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Heyburn during the most sunny months:
The largest precipitation sum in Heyburn is at