Average annual temperature is 12.2 °C
Absolute maximum temperature: 33.1 °C
Absolute minimum temperature: -10.3 °C
Number of sunny days: 157 days
Number of rainy days: 199 days
Number of snow days: 9 days
Look at detailed online map of Guernsey County
* Weather data for Guernsey 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) | 15.7 | 21.9 | 21.9 | 27.6 | 29.5 | 32.7 | 32.6 | 31.8 | 33.1 | 27.6 | 18.8 | 16.0 |
| Average daytime temperature (°C) | 7.5 | 11.3 | 10.9 | 18.3 | 21.8 | 25.9 | 29.3 | 27.4 | 24.9 | 18.3 | 11.5 | 8.7 |
| Average temperature (°C) | 3.1 | 4.3 | 4.8 | 11.4 | 15.3 | 19.5 | 23.2 | 21.6 | 19.1 | 13.3 | 5.9 | 4.5 |
| Average night temperature (°C) | 0.1 | -0.3 | 0.3 | 5.7 | 9.5 | 14.1 | 18.5 | 16.8 | 14.4 | 9.4 | 1.8 | 1.4 |
| Absolute minimum temperature (°C) | -7.0 | -10.3 | -7.9 | -1.3 | 1.9 | 8.6 | 14.7 | 11.0 | 9.3 | 1.1 | -7.2 | -5.3 |
| 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 | 15.0 | 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 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 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) | 3.6 | 6.8 | 7.1 | 9.1 | 10.4 | 11.0 | 11.5 | 10.9 | 9.2 | 7.6 | 6.8 | 4.7 |
| Precipitation (mm) | 146 | 61 | 123 | 88 | 93 | 135 | 90 | 104 | 41 | 82 | 49 | 64 |
| Sunny days | 6 | 14 | 10 | 13 | 17 | 13 | 6 | 14 | 15 | 14 | 22 | 13 |
| Rainy days | 20 | 13 | 19 | 17 | 14 | 17 | 25 | 17 | 15 | 17 | 8 | 17 |
| Snow days | 5 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Guernsey County during the most sunny months:
The largest precipitation sum in Guernsey County is at