Average annual temperature is 10.7 °C
Absolute maximum temperature: 39.0 °C
Absolute minimum temperature: -22.7 °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 Foster
* Weather data for Foster 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) | 3.5 | 11.8 | 19.0 | 29.6 | 31.7 | 34.2 | 37.5 | 39.0 | 35.9 | 31.8 | 18.4 | 13.3 |
| Average daytime temperature (°C) | -2.9 | 1.6 | 7.3 | 16.8 | 25.8 | 29.6 | 30.5 | 30.3 | 27.4 | 16.8 | 10.9 | 5.0 |
| Average temperature (°C) | -6.1 | -4.2 | 0.0 | 9.7 | 18.8 | 23.4 | 23.9 | 24.1 | 20.9 | 11.3 | 4.9 | 0.3 |
| Average night temperature (°C) | -9.2 | -8.7 | -4.4 | 4.0 | 12.5 | 17.1 | 18.0 | 18.7 | 15.4 | 6.8 | 0.4 | -3.3 |
| Absolute minimum temperature (°C) | -22.2 | -22.7 | -12.1 | -6.4 | 1.8 | 9.3 | 10.4 | 12.0 | 8.7 | -7.6 | -7.7 | -9.1 |
| 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 | 7.3 | 7.8 | 10.1 | 11.4 | 13.1 | 12.1 | 11.5 | 10.1 | 7.3 | 7.1 | 5.4 |
| Precipitation (mm) | 61 | 29 | 30 | 18 | 54 | 81 | 66 | 34 | 69 | 133 | 14 | 50 |
| Sunny days | 18 | 19 | 23 | 20 | 16 | 14 | 13 | 19 | 18 | 17 | 22 | 22 |
| Rainy days | 4 | 3 | 4 | 8 | 15 | 16 | 18 | 12 | 12 | 12 | 5 | 4 |
| Snow days | 9 | 6 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 3 | 5 |
The best time to visit Foster during the most sunny months:
The largest precipitation sum in Foster is at