Average annual temperature is 12.2 °C
Absolute maximum temperature: 35.7 °C
Absolute minimum temperature: -19.0 °C
Number of sunny days: 193 days
Number of rainy days: 156 days
Number of snow days: 16 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) | 13.4 | 14.9 | 22.2 | 28.2 | 31.3 | 32.3 | 35.7 | 35.6 | 33.9 | 31.9 | 19.6 | 15.1 |
| Average daytime temperature (°C) | 2.5 | 6.2 | 9.0 | 17.9 | 24.8 | 29.0 | 28.8 | 28.3 | 26.7 | 18.8 | 11.3 | 7.2 |
| Average temperature (°C) | -1.6 | -0.1 | 3.3 | 11.1 | 18.6 | 23.4 | 23.7 | 23.6 | 20.9 | 13.9 | 6.1 | 3.3 |
| Average night temperature (°C) | -4.5 | -4.8 | -0.9 | 5.8 | 12.6 | 17.8 | 19.1 | 19.7 | 16.1 | 10.0 | 1.9 | 0.3 |
| Absolute minimum temperature (°C) | -15.4 | -19.0 | -12.6 | -2.9 | 2.5 | 10.1 | 13.7 | 13.3 | 11.9 | -3.4 | -9.8 | -6.0 |
| 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 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| 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) | 4.9 | 7.5 | 7.2 | 9.6 | 12.1 | 12.2 | 12.3 | 11.0 | 10.5 | 7.5 | 7.2 | 4.6 |
| Precipitation (mm) | 60 | 95 | 74 | 43 | 45 | 45 | 200 | 108 | 28 | 61 | 17 | 63 |
| Sunny days | 15 | 16 | 13 | 17 | 19 | 15 | 15 | 15 | 15 | 17 | 22 | 14 |
| Rainy days | 11 | 9 | 15 | 12 | 12 | 15 | 16 | 16 | 15 | 14 | 6 | 15 |
| Snow days | 5 | 3 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 |
The best time to visit Foster during the most sunny months:
The largest precipitation sum in Foster is at