Average annual temperature is 21.8 °C
Absolute maximum temperature: 38.4 °C
Absolute minimum temperature: 0.9 °C
Number of sunny days: 144 days
Number of rainy days: 221 days
Look at detailed online map of Island Grove
* Weather data for Island Grove 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) | 27.4 | 28.7 | 30.9 | 32.6 | 33.9 | 35.7 | 37.5 | 38.4 | 35.6 | 30.8 | 29.8 | 26.0 |
| Average daytime temperature (°C) | 21.2 | 24.9 | 26.0 | 29.1 | 29.3 | 31.8 | 33.9 | 34.9 | 31.8 | 27.5 | 23.2 | 20.0 |
| Average temperature (°C) | 15.0 | 18.2 | 19.6 | 22.5 | 23.2 | 25.8 | 27.9 | 28.7 | 25.8 | 22.0 | 17.9 | 15.2 |
| Average night temperature (°C) | 10.5 | 13.5 | 14.8 | 17.3 | 18.4 | 21.6 | 23.8 | 24.3 | 21.6 | 17.8 | 14.1 | 11.8 |
| Absolute minimum temperature (°C) | 0.9 | 6.2 | 4.8 | 11.3 | 13.6 | 17.6 | 22.1 | 22.0 | 17.0 | 9.9 | 4.7 | 4.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 14.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.5 | 11.2 | 12.0 | 12.9 | 13.6 | 14.0 | 13.8 | 13.2 | 12.3 | 11.5 | 10.7 | 10.3 |
| 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) | 8.4 | 9.1 | 9.7 | 9.8 | 11.1 | 10.7 | 11.1 | 11.4 | 10.1 | 9.3 | 6.7 | 7.0 |
| Precipitation (mm) | 38 | 47 | 52 | 78 | 86 | 103 | 108 | 89 | 124 | 58 | 90 | 90 |
| Sunny days | 19 | 21 | 15 | 9 | 12 | 5 | 2 | 2 | 8 | 21 | 14 | 16 |
| Rainy days | 12 | 7 | 16 | 21 | 19 | 25 | 29 | 29 | 22 | 10 | 16 | 15 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Island Grove is at