Average annual temperature is 11.8 °C
Absolute maximum temperature: 33.2 °C
Absolute minimum temperature: -12.2 °C
Number of sunny days: 150 days
Number of rainy days: 203 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) | 16.0 | 20.4 | 20.4 | 27.7 | 30.0 | 32.6 | 31.3 | 31.9 | 33.2 | 27.1 | 18.5 | 16.4 |
| Average daytime temperature (°C) | 6.9 | 10.4 | 9.8 | 18.5 | 21.6 | 25.1 | 27.8 | 26.8 | 23.6 | 17.7 | 10.9 | 8.2 |
| Average temperature (°C) | 3.0 | 3.8 | 4.2 | 11.4 | 15.0 | 19.1 | 22.4 | 21.2 | 18.2 | 12.9 | 5.7 | 4.5 |
| Average night temperature (°C) | 0.2 | -1.1 | -0.2 | 5.8 | 8.6 | 13.8 | 18.1 | 16.7 | 13.9 | 9.1 | 1.7 | 1.5 |
| Absolute minimum temperature (°C) | -6.5 | -12.2 | -7.8 | -2.4 | 1.2 | 8.8 | 14.2 | 11.7 | 8.2 | 1.4 | -7.0 | -5.1 |
| 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) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 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) | 2.7 | 6.5 | 6.2 | 8.4 | 10.3 | 10.8 | 11.0 | 10.7 | 8.6 | 6.0 | 6.8 | 3.8 |
| Precipitation (mm) | 125 | 65 | 114 | 67 | 66 | 135 | 134 | 112 | 64 | 98 | 47 | 73 |
| Sunny days | 7 | 14 | 11 | 13 | 20 | 12 | 5 | 10 | 14 | 14 | 20 | 10 |
| Rainy days | 20 | 13 | 17 | 17 | 11 | 18 | 26 | 21 | 16 | 17 | 8 | 19 |
| Snow days | 4 | 1 | 3 | 0 | 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