Average annual temperature is 16.2 °C
Absolute maximum temperature: 35.1 °C
Absolute minimum temperature: -6.6 °C
Number of sunny days: 186 days
Number of rainy days: 179 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) | 19.7 | 26.1 | 24.6 | 28.2 | 26.8 | 30.6 | 35.1 | 34.6 | 32.7 | 27.7 | 26.0 | 20.9 |
| Average daytime temperature (°C) | 12.3 | 13.5 | 14.6 | 20.5 | 21.3 | 25.7 | 30.5 | 29.3 | 26.4 | 21.6 | 14.7 | 12.4 |
| Average temperature (°C) | 8.3 | 9.2 | 9.9 | 16.0 | 17.6 | 21.7 | 26.5 | 25.5 | 22.8 | 17.2 | 10.7 | 8.4 |
| Average night temperature (°C) | 5.0 | 5.3 | 5.9 | 12.4 | 14.4 | 18.4 | 23.3 | 22.5 | 19.6 | 13.7 | 7.5 | 5.2 |
| Absolute minimum temperature (°C) | -0.9 | -6.6 | -0.1 | 6.5 | 8.2 | 14.0 | 21.1 | 18.4 | 15.9 | 8.3 | -2.8 | -0.5 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.5 | 13.6 | 12.4 | 11.2 | 10.2 | 9.6 |
| 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) | 6.0 | 6.9 | 8.3 | 9.1 | 10.1 | 11.4 | 11.9 | 10.4 | 8.9 | 8.8 | 7.9 | 6.3 |
| Precipitation (mm) | 78 | 52 | 48 | 139 | 105 | 117 | 92 | 68 | 110 | 26 | 47 | 117 |
| Sunny days | 15 | 15 | 19 | 17 | 15 | 13 | 8 | 10 | 12 | 22 | 24 | 16 |
| Rainy days | 16 | 13 | 12 | 13 | 16 | 17 | 23 | 21 | 18 | 9 | 6 | 15 |
| 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