Average annual temperature is 11.0 °C
Absolute maximum temperature: 33.4 °C
Absolute minimum temperature: -24.2 °C
Number of sunny days: 153 days
Number of rainy days: 200 days
Number of snow days: 12 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) | 15.1 | 16.5 | 14.9 | 32.8 | 28.0 | 33.4 | 31.3 | 28.5 | 33.3 | 27.6 | 17.5 | 15.3 |
| Average daytime temperature (°C) | 6.1 | 5.6 | 8.2 | 16.5 | 20.6 | 23.6 | 27.8 | 24.8 | 22.4 | 18.1 | 9.0 | 7.8 |
| Average temperature (°C) | 2.4 | 0.8 | 3.1 | 10.5 | 14.2 | 17.9 | 22.9 | 20.3 | 18.1 | 13.3 | 4.2 | 3.5 |
| Average night temperature (°C) | -0.8 | -3.5 | -1.0 | 5.5 | 8.5 | 13.4 | 19.0 | 16.6 | 14.9 | 9.8 | 0.6 | 0.2 |
| Absolute minimum temperature (°C) | -6.2 | -24.2 | -5.2 | -2.2 | 2.9 | 6.6 | 13.7 | 12.8 | 7.9 | 2.9 | -5.1 | -7.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 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) | 9.5 | 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) | 3.9 | 6.6 | 7.4 | 8.6 | 11.5 | 9.9 | 10.9 | 9.4 | 7.3 | 7.8 | 7.1 | 5.2 |
| Precipitation (mm) | 174 | 52 | 123 | 67 | 77 | 108 | 180 | 160 | 214 | 109 | 47 | 188 |
| Sunny days | 7 | 13 | 15 | 15 | 20 | 3 | 10 | 9 | 11 | 13 | 20 | 17 |
| Rainy days | 17 | 13 | 15 | 15 | 11 | 27 | 21 | 22 | 19 | 18 | 8 | 14 |
| Snow days | 7 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 |
The best time to visit Foster during the most sunny months:
The largest precipitation sum in Foster is at