Average annual temperature is 15.1 °C
Absolute maximum temperature: 40.6 °C
Absolute minimum temperature: -10.6 °C
Number of sunny days: 212 days
Number of rainy days: 151 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) | 17.2 | 20.6 | 25.4 | 27.8 | 33.0 | 40.6 | 37.4 | 38.4 | 35.5 | 31.0 | 25.1 | 16.7 |
| Average daytime temperature (°C) | 8.5 | 11.4 | 13.2 | 21.7 | 27.2 | 31.2 | 33.1 | 32.7 | 29.2 | 21.1 | 14.9 | 10.6 |
| Average temperature (°C) | 3.0 | 4.6 | 7.3 | 14.3 | 20.4 | 24.6 | 26.7 | 26.6 | 22.7 | 15.7 | 8.8 | 6.0 |
| Average night temperature (°C) | -1.1 | -0.4 | 2.7 | 8.1 | 14.6 | 18.8 | 21.6 | 21.7 | 17.2 | 11.4 | 4.1 | 2.6 |
| Absolute minimum temperature (°C) | -10.6 | -9.8 | -6.9 | 1.1 | 6.5 | 12.7 | 16.2 | 15.2 | 11.6 | -2.2 | -5.5 | -4.2 |
| 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) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 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) | 6.1 | 7.5 | 7.3 | 10.5 | 10.5 | 12.7 | 11.2 | 11.5 | 10.4 | 7.9 | 7.6 | 5.3 |
| Precipitation (mm) | 72 | 62 | 85 | 33 | 70 | 81 | 65 | 54 | 69 | 96 | 29 | 99 |
| Sunny days | 19 | 16 | 12 | 21 | 16 | 20 | 12 | 20 | 18 | 19 | 22 | 17 |
| Rainy days | 11 | 11 | 19 | 9 | 15 | 10 | 19 | 11 | 12 | 12 | 8 | 14 |
| 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