Average annual temperature is 10.3 °C
Absolute maximum temperature: 39.5 °C
Absolute minimum temperature: -25.7 °C
Number of sunny days: 221 days
Number of rainy days: 113 days
Number of snow days: 31 days
Look at detailed online map of Township of Grattan
* Weather data for Township of Grattan 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) | 4.5 | 7.2 | 17.2 | 29.7 | 31.2 | 34.2 | 37.4 | 39.5 | 39.0 | 30.4 | 19.1 | 14.5 |
| Average daytime temperature (°C) | -2.8 | 0.9 | 7.1 | 16.3 | 24.9 | 29.0 | 29.9 | 30.7 | 27.3 | 16.5 | 11.2 | 5.4 |
| Average temperature (°C) | -6.0 | -4.6 | -0.5 | 9.2 | 18.0 | 22.7 | 23.6 | 24.2 | 20.6 | 10.6 | 4.8 | 0.4 |
| Average night temperature (°C) | -8.9 | -9.1 | -4.8 | 3.3 | 11.8 | 16.5 | 17.9 | 18.6 | 15.1 | 6.0 | 0.2 | -3.2 |
| Absolute minimum temperature (°C) | -21.5 | -25.7 | -12.4 | -6.8 | 0.4 | 7.8 | 10.4 | 13.3 | 7.8 | -8.7 | -7.6 | -12.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.9 | 12.5 | 11.1 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.8 | 7.7 | 8.2 | 10.4 | 11.2 | 12.6 | 12.0 | 11.4 | 10.3 | 7.4 | 7.1 | 5.3 |
| Precipitation (mm) | 84 | 20 | 38 | 12 | 67 | 106 | 75 | 66 | 54 | 127 | 17 | 51 |
| Sunny days | 18 | 19 | 22 | 22 | 12 | 14 | 15 | 19 | 21 | 16 | 24 | 19 |
| Rainy days | 2 | 3 | 4 | 7 | 19 | 16 | 16 | 12 | 9 | 13 | 5 | 7 |
| Snow days | 11 | 6 | 5 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 5 |
The best time to visit Township of Grattan during the most sunny months:
The largest precipitation sum in Township of Grattan is at