Average annual temperature is 24.3 °C
Absolute maximum temperature: 36.8 °C
Absolute minimum temperature: 3.3 °C
Number of sunny days: 127 days
Number of rainy days: 238 days
Look at detailed online map of Forest Island Park
* Weather data for Forest Island Park 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) | 30.0 | 31.6 | 32.3 | 34.0 | 34.2 | 35.0 | 36.8 | 35.3 | 36.3 | 32.2 | 33.1 | 28.8 |
| Average daytime temperature (°C) | 24.4 | 27.3 | 28.6 | 29.4 | 31.2 | 31.4 | 34.0 | 33.2 | 32.4 | 30.0 | 27.5 | 23.4 |
| Average temperature (°C) | 18.8 | 21.9 | 22.8 | 24.3 | 25.8 | 26.9 | 28.9 | 28.5 | 27.2 | 24.8 | 22.2 | 19.0 |
| Average night temperature (°C) | 14.6 | 17.6 | 18.0 | 20.0 | 20.9 | 23.2 | 24.9 | 24.9 | 23.3 | 20.7 | 17.9 | 15.5 |
| Absolute minimum temperature (°C) | 3.3 | 9.1 | 10.6 | 15.2 | 16.5 | 20.3 | 23.3 | 23.1 | 21.2 | 11.5 | 9.1 | 8.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.7 | 11.3 | 12.0 | 12.8 | 13.4 | 13.8 | 13.6 | 13.1 | 12.3 | 11.5 | 10.9 | 10.5 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 8.6 | 9.9 | 10.7 | 10.9 | 12.2 | 11.9 | 11.1 | 10.6 | 10.3 | 9.7 | 8.5 | 6.9 |
| Precipitation (mm) | 37 | 6 | 14 | 76 | 48 | 202 | 158 | 211 | 157 | 63 | 98 | 121 |
| Sunny days | 20 | 17 | 14 | 5 | 12 | 4 | 3 | 1 | 2 | 20 | 16 | 13 |
| Rainy days | 11 | 11 | 17 | 25 | 19 | 26 | 28 | 30 | 28 | 11 | 14 | 18 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Forest Island Park is at