Average annual temperature is 17.0 °C
Absolute maximum temperature: 46.1 °C
Absolute minimum temperature: -2.4 °C
Number of sunny days: 253 days
Number of rainy days: 112 days
Look at detailed online map of Glenn County
* Weather data for Glenn County 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) | 18.9 | 20.8 | 17.7 | 33.0 | 36.1 | 42.4 | 46.1 | 44.2 | 38.5 | 34.4 | 25.0 | 18.4 |
| Average daytime temperature (°C) | 12.4 | 13.5 | 13.2 | 21.2 | 28.0 | 33.3 | 40.0 | 37.7 | 31.3 | 26.8 | 18.7 | 14.3 |
| Average temperature (°C) | 7.8 | 7.1 | 7.4 | 13.8 | 20.2 | 24.9 | 30.3 | 28.8 | 23.0 | 18.4 | 12.3 | 9.5 |
| Average night temperature (°C) | 4.4 | 2.7 | 3.0 | 7.4 | 13.5 | 17.1 | 21.0 | 21.1 | 16.1 | 12.2 | 7.4 | 5.7 |
| Absolute minimum temperature (°C) | -1.7 | -1.5 | -2.4 | -0.6 | 5.7 | 10.6 | 14.9 | 17.1 | 11.2 | 3.2 | 1.5 | 0.3 |
| 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) | 9.7 | 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) | 5.2 | 8.0 | 7.6 | 11.3 | 12.1 | 13.4 | 13.6 | 12.1 | 11.2 | 9.2 | 7.8 | 5.2 |
| Precipitation (mm) | 258 | 68 | 156 | 12 | 37 | 1 | 0 | 1 | 10 | 4 | 37 | 138 |
| Sunny days | 13 | 16 | 11 | 23 | 19 | 26 | 31 | 28 | 25 | 26 | 19 | 16 |
| Rainy days | 18 | 12 | 20 | 7 | 12 | 4 | 0 | 3 | 5 | 5 | 11 | 15 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Glenn County during the most sunny months:
The largest precipitation sum in Glenn County is at