Average annual temperature is 12.2 °C
Absolute maximum temperature: 31.1 °C
Absolute minimum temperature: -12.7 °C
Number of sunny days: 151 days
Number of rainy days: 199 days
Number of snow days: 15 days
Look at detailed online map of Gratton
* Weather data for Gratton 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) | 18.0 | 22.8 | 22.7 | 26.4 | 25.7 | 29.1 | 31.1 | 30.0 | 29.5 | 25.8 | 21.4 | 16.2 |
| Average daytime temperature (°C) | 9.2 | 12.1 | 12.1 | 18.6 | 20.0 | 23.3 | 27.5 | 25.8 | 23.5 | 18.3 | 12.8 | 9.3 |
| Average temperature (°C) | 3.9 | 6.4 | 6.3 | 12.0 | 14.6 | 17.9 | 22.2 | 20.8 | 17.9 | 12.8 | 6.7 | 4.5 |
| Average night temperature (°C) | 0.3 | 2.2 | 1.7 | 7.1 | 10.3 | 13.5 | 17.9 | 16.9 | 13.6 | 8.6 | 2.4 | 1.1 |
| Absolute minimum temperature (°C) | -12.7 | -11.0 | -9.4 | -1.3 | 2.0 | 8.3 | 14.1 | 11.3 | 9.8 | 2.1 | -7.8 | -6.7 |
| 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) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.4 | 13.6 | 12.4 | 11.2 | 10.2 | 9.7 |
| 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) | 4.6 | 6.2 | 7.7 | 9.8 | 9.9 | 11.1 | 11.8 | 10.1 | 10.3 | 8.1 | 7.6 | 5.4 |
| Precipitation (mm) | 112 | 100 | 78 | 87 | 109 | 62 | 55 | 97 | 82 | 43 | 60 | 88 |
| Sunny days | 12 | 9 | 14 | 15 | 9 | 10 | 7 | 8 | 18 | 18 | 19 | 12 |
| Rainy days | 16 | 15 | 15 | 15 | 22 | 20 | 24 | 23 | 12 | 13 | 9 | 15 |
| Snow days | 3 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 4 |
The best time to visit Gratton during the most sunny months:
The largest precipitation sum in Gratton is at