Average annual temperature is 8.3 °C
Absolute maximum temperature: 36.1 °C
Absolute minimum temperature: -26.5 °C
Number of sunny days: 217 days
Number of rainy days: 115 days
Number of snow days: 33 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) | 1.9 | 4.0 | 2.4 | 24.0 | 32.5 | 33.9 | 36.1 | 35.0 | 35.2 | 31.8 | 16.5 | 11.0 |
| Average daytime temperature (°C) | -5.2 | -2.8 | -1.9 | 8.6 | 23.9 | 29.3 | 27.9 | 28.0 | 24.9 | 14.9 | 8.2 | 4.3 |
| Average temperature (°C) | -8.6 | -8.1 | -6.3 | 3.2 | 17.3 | 23.5 | 22.3 | 22.5 | 19.7 | 10.4 | 3.0 | 0.3 |
| Average night temperature (°C) | -11.7 | -12.8 | -9.9 | -1.1 | 11.0 | 17.7 | 17.0 | 18.1 | 15.3 | 6.7 | -0.8 | -2.6 |
| Absolute minimum temperature (°C) | -25.6 | -26.5 | -18.2 | -10.4 | 1.6 | 11.2 | 11.0 | 14.0 | 9.6 | -4.9 | -9.9 | -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 | 8.0 |
| Daylight mean duration (h) | 9.2 | 10.4 | 11.9 | 13.5 | 14.9 | 15.6 | 15.3 | 14.1 | 12.5 | 10.9 | 9.5 | 8.8 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 3.3 | 7.4 | 7.5 | 9.1 | 11.8 | 13.2 | 12.9 | 11.3 | 10.2 | 7.6 | 6.9 | 4.3 |
| Precipitation (mm) | 16 | 32 | 56 | 61 | 37 | 84 | 29 | 116 | 111 | 87 | 8 | 82 |
| Sunny days | 20 | 19 | 17 | 14 | 20 | 15 | 16 | 18 | 17 | 17 | 23 | 21 |
| Rainy days | 4 | 3 | 3 | 13 | 11 | 15 | 15 | 13 | 13 | 13 | 5 | 7 |
| Snow days | 7 | 6 | 11 | 3 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 3 |
The best time to visit Foster during the most sunny months:
Months with the longest average daylight duration in Foster:
The largest precipitation sum in Foster is at