Average annual temperature is 15.6 °C
Absolute maximum temperature: 37.0 °C
Absolute minimum temperature: -1.3 °C
Number of sunny days: 239 days
Number of rainy days: 126 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) | 19.9 | 20.7 | 21.3 | 28.7 | 24.1 | 28.7 | 35.3 | 37.0 | 34.7 | 33.4 | 28.6 | 25.1 |
| Average daytime temperature (°C) | 14.8 | 15.3 | 14.8 | 20.0 | 19.7 | 22.2 | 30.5 | 29.8 | 26.5 | 26.2 | 22.7 | 19.1 |
| Average temperature (°C) | 10.0 | 9.4 | 10.1 | 13.4 | 14.3 | 16.4 | 22.8 | 23.1 | 20.3 | 19.1 | 15.4 | 12.6 |
| Average night temperature (°C) | 6.2 | 4.7 | 6.7 | 9.3 | 11.0 | 12.8 | 17.0 | 18.0 | 16.3 | 13.6 | 9.6 | 7.9 |
| Absolute minimum temperature (°C) | 1.5 | -1.3 | -0.9 | 2.5 | 8.5 | 11.7 | 12.3 | 14.4 | 13.1 | 6.8 | 4.7 | 4.1 |
| 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 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.3 | 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) | 6.7 | 8.3 | 7.3 | 10.3 | 9.1 | 10.0 | 12.5 | 11.3 | 9.4 | 9.8 | 8.6 | 8.1 |
| Precipitation (mm) | 256 | 95 | 205 | 10 | 19 | 14 | 0 | 48 | 20 | 17 | 46 | 28 |
| Sunny days | 15 | 15 | 13 | 24 | 13 | 16 | 29 | 28 | 19 | 25 | 21 | 21 |
| Rainy days | 16 | 13 | 18 | 6 | 18 | 14 | 2 | 3 | 11 | 6 | 9 | 10 |
| Snow days | 0 | 0 | 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