Average annual temperature is 10.4 °C
Absolute maximum temperature: 32.9 °C
Absolute minimum temperature: -20.6 °C
Number of sunny days: 129 days
Number of rainy days: 216 days
Number of snow days: 20 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) | 14.8 | 16.6 | 16.0 | 28.5 | 30.2 | 31.6 | 32.9 | 28.8 | 31.4 | 28.5 | 16.7 | 12.3 |
| Average daytime temperature (°C) | 4.7 | 7.0 | 7.1 | 17.4 | 20.5 | 24.1 | 28.2 | 24.9 | 22.9 | 17.1 | 8.6 | 6.9 |
| Average temperature (°C) | 1.3 | 0.5 | 1.8 | 10.3 | 13.2 | 18.3 | 22.2 | 19.7 | 17.2 | 12.4 | 3.7 | 3.1 |
| Average night temperature (°C) | -1.6 | -4.4 | -2.3 | 4.7 | 6.5 | 13.1 | 17.5 | 15.6 | 12.8 | 8.6 | 0.1 | 0.5 |
| Absolute minimum temperature (°C) | -7.7 | -20.6 | -7.1 | -3.7 | -1.1 | 7.3 | 13.2 | 10.5 | 6.2 | 0.6 | -6.1 | -6.2 |
| 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 | 13.8 | 12.5 | 11.1 | 9.8 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 2.9 | 5.5 | 6.2 | 8.6 | 12.1 | 10.9 | 11.1 | 10.1 | 8.9 | 6.8 | 6.2 | 3.4 |
| Precipitation (mm) | 92 | 61 | 99 | 101 | 41 | 120 | 167 | 181 | 52 | 87 | 44 | 133 |
| Sunny days | 8 | 10 | 8 | 11 | 20 | 8 | 4 | 10 | 15 | 12 | 11 | 12 |
| Rainy days | 17 | 13 | 19 | 19 | 11 | 22 | 27 | 21 | 15 | 19 | 16 | 17 |
| Snow days | 6 | 5 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 2 |
The best time to visit Foster during the most sunny months:
The largest precipitation sum in Foster is at