Average annual temperature is 13.6 °C
Absolute maximum temperature: 34.0 °C
Absolute minimum temperature: -8.4 °C
Number of sunny days: 173 days
Number of rainy days: 185 days
Number of snow days: 7 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) | 17.0 | 22.2 | 23.9 | 27.8 | 30.5 | 32.9 | 33.2 | 34.0 | 33.8 | 29.9 | 25.2 | 16.3 |
| Average daytime temperature (°C) | 8.0 | 12.6 | 12.9 | 18.9 | 23.4 | 27.5 | 30.1 | 29.1 | 26.6 | 20.0 | 13.0 | 9.7 |
| Average temperature (°C) | 3.9 | 5.7 | 6.3 | 12.4 | 17.2 | 21.5 | 24.5 | 23.6 | 20.8 | 14.6 | 7.4 | 5.1 |
| Average night temperature (°C) | 0.8 | 1.0 | 1.6 | 6.8 | 11.8 | 16.0 | 19.9 | 18.5 | 15.6 | 10.3 | 3.3 | 1.8 |
| Absolute minimum temperature (°C) | -6.3 | -8.4 | -7.4 | 0.5 | 3.4 | 11.5 | 16.2 | 13.0 | 10.5 | -1.0 | -6.6 | -5.8 |
| 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 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.7 | 12.0 | 13.2 | 14.3 | 14.9 | 14.6 | 13.7 | 12.5 | 11.2 | 10.0 | 9.5 |
| 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) | 4.1 | 7.7 | 7.5 | 9.1 | 10.4 | 11.2 | 11.8 | 11.3 | 10.3 | 7.6 | 7.7 | 4.7 |
| Precipitation (mm) | 130 | 59 | 155 | 94 | 63 | 66 | 99 | 115 | 42 | 71 | 36 | 59 |
| Sunny days | 6 | 15 | 14 | 13 | 20 | 12 | 8 | 16 | 18 | 13 | 24 | 14 |
| Rainy days | 21 | 13 | 14 | 17 | 11 | 18 | 23 | 15 | 12 | 18 | 6 | 17 |
| Snow days | 4 | 0 | 3 | 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