Average annual temperature is 15.0 °C
Absolute maximum temperature: 38.1 °C
Absolute minimum temperature: -10.4 °C
Number of sunny days: 207 days
Number of rainy days: 153 days
Number of snow days: 5 days
Look at detailed online map of Glenn
* Weather data for Glenn 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) | 20.6 | 22.0 | 24.1 | 27.3 | 30.4 | 36.3 | 36.9 | 38.1 | 32.9 | 29.7 | 25.2 | 18.3 |
| Average daytime temperature (°C) | 9.2 | 12.2 | 13.7 | 20.6 | 25.7 | 30.6 | 31.6 | 30.4 | 27.8 | 21.1 | 14.6 | 10.6 |
| Average temperature (°C) | 4.6 | 6.3 | 7.8 | 14.0 | 19.5 | 23.8 | 25.9 | 25.0 | 21.9 | 15.8 | 9.1 | 6.2 |
| Average night temperature (°C) | 1.0 | 2.1 | 3.4 | 8.5 | 14.2 | 17.6 | 21.4 | 21.0 | 17.2 | 11.7 | 4.8 | 3.0 |
| Absolute minimum temperature (°C) | -10.4 | -8.5 | -5.7 | 2.3 | 5.7 | 11.9 | 17.2 | 15.2 | 13.3 | -1.7 | -3.7 | -4.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.5 | 13.6 | 12.4 | 11.2 | 10.2 | 9.6 |
| 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) | 5.3 | 7.3 | 7.1 | 10.2 | 10.8 | 12.8 | 11.3 | 10.4 | 10.5 | 7.6 | 7.9 | 6.3 |
| Precipitation (mm) | 155 | 66 | 202 | 82 | 76 | 22 | 132 | 103 | 71 | 63 | 14 | 55 |
| Sunny days | 13 | 16 | 15 | 18 | 17 | 19 | 11 | 17 | 18 | 19 | 24 | 20 |
| Rainy days | 15 | 11 | 15 | 12 | 14 | 11 | 20 | 14 | 12 | 12 | 6 | 11 |
| Snow days | 3 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Glenn during the most sunny months:
The largest precipitation sum in Glenn is at