Average annual temperature is 14.9 °C
Absolute maximum temperature: 32.0 °C
Absolute minimum temperature: -9.2 °C
Number of sunny days: 210 days
Number of rainy days: 150 days
Number of snow days: 5 days
Look at detailed online map of Heyvī
* Weather data for Heyvī Iran is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 17.5 | 18.5 | 26.5 | 29.3 | 31.3 | 28.2 | 31.9 | 32.0 | 30.9 | 30.0 | 25.0 | 22.5 |
| Average daytime temperature (°C) | 7.4 | 9.5 | 16.4 | 19.6 | 21.3 | 23.5 | 26.5 | 28.1 | 23.2 | 20.6 | 19.8 | 15.0 |
| Average temperature (°C) | 3.1 | 4.8 | 11.7 | 15.1 | 17.4 | 20.2 | 22.6 | 23.7 | 19.2 | 16.4 | 14.6 | 9.9 |
| Average night temperature (°C) | -0.4 | 0.5 | 7.4 | 10.1 | 13.3 | 16.8 | 19.1 | 19.7 | 15.4 | 12.6 | 10.6 | 5.8 |
| Absolute minimum temperature (°C) | -4.4 | -9.2 | 3.5 | 0.8 | 6.1 | 13.7 | 16.8 | 16.8 | 12.2 | 9.1 | 6.2 | 0.6 |
| 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 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.9 | 7.2 | 7.2 | 9.6 | 9.3 | 8.9 | 9.9 | 9.9 | 9.0 | 8.5 | 8.2 | 7.3 |
| Precipitation (mm) | 10 | 66 | 75 | 20 | 125 | 82 | 52 | 46 | 59 | 157 | 67 | 39 |
| Sunny days | 25 | 15 | 12 | 20 | 16 | 14 | 13 | 20 | 17 | 16 | 17 | 25 |
| Rainy days | 5 | 9 | 19 | 10 | 15 | 16 | 18 | 11 | 13 | 15 | 13 | 6 |
| Snow days | 1 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Heyvī is at