Average annual temperature is 6.1 °C
Absolute maximum temperature: 32.1 °C
Absolute minimum temperature: -30.8 °C
Number of sunny days: 178 days
Number of rainy days: 139 days
Number of snow days: 48 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) | 2.3 | 6.7 | 4.7 | 19.1 | 29.3 | 30.9 | 30.2 | 29.5 | 32.1 | 27.8 | 13.3 | 7.5 |
| Average daytime temperature (°C) | -5.6 | -3.9 | -0.7 | 7.5 | 21.3 | 25.6 | 23.8 | 24.2 | 21.7 | 12.0 | 3.4 | 1.4 |
| Average temperature (°C) | -9.1 | -9.7 | -5.8 | 1.7 | 14.4 | 19.8 | 18.8 | 19.2 | 16.8 | 8.1 | -0.8 | -1.7 |
| Average night temperature (°C) | -12.2 | -14.5 | -10.4 | -2.7 | 8.2 | 14.8 | 14.3 | 15.1 | 13.1 | 5.2 | -3.7 | -3.8 |
| Absolute minimum temperature (°C) | -28.4 | -30.8 | -18.0 | -11.9 | -0.7 | 7.9 | 9.8 | 10.6 | 6.9 | -6.0 | -14.5 | -13.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 10.0 | 12.0 | 14.0 | 15.0 | 16.0 | 15.0 | 14.0 | 13.0 | 11.0 | 9.0 | 8.0 |
| Daylight mean duration (h) | 8.9 | 10.2 | 11.9 | 13.6 | 15.2 | 15.9 | 15.6 | 14.2 | 12.6 | 10.9 | 9.3 | 8.5 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 3.4 | 7.1 | 7.8 | 7.3 | 11.4 | 12.4 | 12.6 | 10.6 | 8.2 | 5.9 | 4.4 | 3.1 |
| Precipitation (mm) | 14 | 26 | 39 | 62 | 68 | 87 | 73 | 43 | 85 | 58 | 17 | 56 |
| Sunny days | 21 | 17 | 19 | 13 | 17 | 11 | 9 | 13 | 10 | 14 | 18 | 16 |
| Rainy days | 1 | 3 | 3 | 10 | 14 | 19 | 22 | 18 | 20 | 14 | 6 | 9 |
| Snow days | 9 | 8 | 9 | 7 | 0 | 0 | 0 | 0 | 0 | 3 | 6 | 6 |
The best time to visit Township of Grattan during the most sunny months:
Months with the longest average daylight duration in Township of Grattan:
The largest precipitation sum in Township of Grattan is at