Average annual temperature is 11.8 °C
Absolute maximum temperature: 36.7 °C
Absolute minimum temperature: -22.7 °C
Number of sunny days: 198 days
Number of rainy days: 150 days
Number of snow days: 17 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) | 11.3 | 11.2 | 22.5 | 26.1 | 32.4 | 33.9 | 35.0 | 36.7 | 33.9 | 29.9 | 18.7 | 13.8 |
| Average daytime temperature (°C) | 2.4 | 4.9 | 8.6 | 17.4 | 24.6 | 29.3 | 28.8 | 28.7 | 26.1 | 17.7 | 10.0 | 6.8 |
| Average temperature (°C) | -1.6 | -0.6 | 3.0 | 10.4 | 17.9 | 23.1 | 23.5 | 23.4 | 20.4 | 13.1 | 5.1 | 2.8 |
| Average night temperature (°C) | -4.5 | -5.1 | -1.1 | 4.9 | 11.5 | 16.9 | 18.4 | 18.5 | 15.7 | 9.1 | 1.1 | 0.1 |
| Absolute minimum temperature (°C) | -22.7 | -19.5 | -12.3 | -2.2 | 2.5 | 9.0 | 13.0 | 11.8 | 10.2 | -2.9 | -12.2 | -7.8 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.5 | 10.6 | 11.9 | 13.3 | 14.5 | 15.2 | 14.9 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.9 | 7.2 | 6.6 | 9.3 | 11.6 | 12.5 | 12.4 | 11.3 | 9.6 | 7.4 | 7.1 | 4.1 |
| Precipitation (mm) | 73 | 94 | 74 | 60 | 36 | 24 | 101 | 50 | 81 | 115 | 24 | 65 |
| Sunny days | 15 | 15 | 15 | 17 | 21 | 19 | 13 | 17 | 14 | 15 | 22 | 15 |
| Rainy days | 8 | 9 | 15 | 12 | 10 | 11 | 18 | 14 | 16 | 16 | 6 | 15 |
| Snow days | 8 | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 |
The best time to visit Long Grove during the most sunny months:
The largest precipitation sum in Long Grove is at