Average annual temperature is 15.2 °C
Absolute maximum temperature: 38.7 °C
Absolute minimum temperature: -7.7 °C
Number of sunny days: 271 days
Number of rainy days: 91 days
Number of snow days: 3 days
Look at detailed online map of Glen Ilah
* Weather data for Glen Ilah 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) | 17.0 | 15.9 | 16.2 | 29.5 | 29.1 | 34.4 | 38.7 | 35.9 | 34.4 | 30.9 | 24.9 | 19.8 |
| Average daytime temperature (°C) | 8.6 | 11.2 | 11.6 | 22.0 | 24.8 | 28.5 | 35.6 | 31.7 | 28.5 | 24.4 | 17.3 | 14.2 |
| Average temperature (°C) | 3.5 | 4.5 | 6.1 | 14.7 | 18.4 | 22.0 | 29.2 | 25.2 | 21.9 | 17.5 | 10.8 | 7.3 |
| Average night temperature (°C) | -0.5 | -0.4 | 1.3 | 7.4 | 11.2 | 14.0 | 21.4 | 18.8 | 15.2 | 10.5 | 4.9 | 1.6 |
| Absolute minimum temperature (°C) | -5.5 | -6.0 | -7.7 | -4.1 | 5.3 | 10.6 | 17.7 | 15.3 | 12.2 | 1.6 | -1.5 | -3.8 |
| 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 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.6 | 9.1 | 8.8 | 12.1 | 12.6 | 13.0 | 12.9 | 11.6 | 10.6 | 10.4 | 9.1 | 8.5 |
| Precipitation (mm) | 112 | 35 | 114 | 0 | 13 | 1 | 3 | 39 | 13 | 4 | 5 | 22 |
| Sunny days | 16 | 17 | 19 | 30 | 24 | 28 | 22 | 13 | 22 | 27 | 25 | 28 |
| Rainy days | 12 | 11 | 12 | 0 | 7 | 2 | 9 | 18 | 8 | 4 | 5 | 3 |
| Snow days | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Glen Ilah is at