Average annual temperature is 17.8 °C
Absolute maximum temperature: 41.8 °C
Absolute minimum temperature: -7.6 °C
Number of sunny days: 264 days
Number of rainy days: 99 days
Number of snow days: 2 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) | 23.5 | 28.1 | 29.8 | 33.9 | 34.6 | 41.8 | 41.2 | 41.3 | 40.5 | 31.3 | 29.8 | 23.5 |
| Average daytime temperature (°C) | 14.5 | 16.0 | 21.9 | 25.9 | 28.7 | 34.2 | 36.5 | 37.2 | 33.1 | 24.8 | 17.9 | 14.9 |
| Average temperature (°C) | 7.1 | 7.5 | 12.9 | 16.8 | 21.2 | 26.3 | 29.7 | 30.3 | 26.0 | 17.4 | 10.4 | 7.6 |
| Average night temperature (°C) | 1.3 | 1.7 | 5.7 | 9.3 | 14.4 | 19.1 | 22.8 | 23.2 | 19.3 | 11.5 | 4.9 | 1.9 |
| Absolute minimum temperature (°C) | -7.6 | -7.3 | -2.0 | 2.1 | 9.9 | 13.1 | 18.7 | 17.9 | 14.9 | -2.3 | -2.8 | -4.6 |
| 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 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.3 | 14.1 | 13.3 | 12.4 | 11.4 | 10.5 | 10.0 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.9 | 8.0 | 9.9 | 11.0 | 11.2 | 12.4 | 12.7 | 11.9 | 10.7 | 9.1 | 7.8 | 8.0 |
| Precipitation (mm) | 10 | 11 | 1 | 6 | 61 | 110 | 12 | 29 | 32 | 77 | 10 | 49 |
| Sunny days | 28 | 18 | 28 | 24 | 10 | 22 | 23 | 24 | 20 | 20 | 21 | 26 |
| Rainy days | 2 | 9 | 3 | 6 | 21 | 8 | 8 | 7 | 10 | 11 | 9 | 5 |
| Snow days | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Foster during the most sunny months:
The largest precipitation sum in Foster is at