Average annual temperature is 10.7 °C
Absolute maximum temperature: 36.6 °C
Absolute minimum temperature: -23.1 °C
Number of sunny days: 171 days
Number of rainy days: 175 days
Number of snow days: 19 days
Look at detailed online map of Long Grove
* Weather data for Long 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) | 10.9 | 14.8 | 19.8 | 26.4 | 31.5 | 32.1 | 33.0 | 36.6 | 33.3 | 27.3 | 19.3 | 13.9 |
| Average daytime temperature (°C) | 2.7 | 4.8 | 7.1 | 15.8 | 21.3 | 26.6 | 27.7 | 26.8 | 23.7 | 16.4 | 9.3 | 6.0 |
| Average temperature (°C) | -1.1 | -0.5 | 2.2 | 9.3 | 14.8 | 20.1 | 22.2 | 21.7 | 18.9 | 12.2 | 4.6 | 2.7 |
| Average night temperature (°C) | -3.8 | -4.5 | -1.3 | 4.0 | 9.5 | 14.7 | 17.8 | 17.6 | 15.1 | 8.9 | 0.9 | 0.3 |
| Absolute minimum temperature (°C) | -23.1 | -21.2 | -12.0 | -2.3 | 1.1 | 7.2 | 14.0 | 12.1 | 9.1 | -3.0 | -11.0 | -8.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.8 | 12.5 | 11.1 | 9.8 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.4 | 7.7 | 6.4 | 9.0 | 10.8 | 11.8 | 11.6 | 10.4 | 8.0 | 6.5 | 6.9 | 3.6 |
| Precipitation (mm) | 59 | 99 | 83 | 65 | 55 | 35 | 176 | 121 | 96 | 84 | 59 | 70 |
| Sunny days | 10 | 18 | 7 | 14 | 20 | 19 | 11 | 16 | 11 | 10 | 22 | 13 |
| Rainy days | 13 | 9 | 19 | 16 | 11 | 11 | 20 | 15 | 19 | 20 | 6 | 16 |
| Snow days | 8 | 1 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 2 |
The best time to visit Long Grove during the most sunny months:
The largest precipitation sum in Long Grove is at