Average annual temperature is 9.8 °C
Absolute maximum temperature: 36.9 °C
Absolute minimum temperature: -27.1 °C
Number of sunny days: 199 days
Number of rainy days: 132 days
Number of snow days: 34 days
Look at detailed online map of Crystal Lake
* Weather data for Crystal Lake 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) | 4.7 | 9.9 | 19.7 | 27.4 | 31.2 | 31.3 | 33.7 | 36.9 | 33.8 | 30.5 | 17.9 | 11.6 |
| Average daytime temperature (°C) | -2.8 | 0.6 | 5.3 | 14.8 | 24.0 | 28.3 | 27.9 | 28.2 | 25.7 | 16.0 | 9.3 | 5.3 |
| Average temperature (°C) | -6.6 | -5.2 | -0.6 | 8.4 | 17.4 | 22.5 | 22.1 | 22.8 | 20.0 | 11.3 | 3.9 | 0.7 |
| Average night temperature (°C) | -10.0 | -10.0 | -4.8 | 3.5 | 11.2 | 16.7 | 16.6 | 18.2 | 15.1 | 7.5 | -0.1 | -2.3 |
| Absolute minimum temperature (°C) | -26.1 | -27.1 | -16.1 | -5.5 | 0.1 | 9.7 | 10.6 | 12.0 | 9.4 | -5.4 | -12.6 | -7.7 |
| 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) | 9.4 | 10.5 | 11.9 | 13.4 | 14.7 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 9.7 | 9.0 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 4.0 | 6.8 | 7.1 | 8.7 | 11.7 | 12.1 | 12.3 | 11.4 | 9.9 | 7.2 | 6.9 | 4.6 |
| Precipitation (mm) | 62 | 47 | 61 | 80 | 84 | 59 | 46 | 65 | 43 | 155 | 6 | 46 |
| Sunny days | 19 | 15 | 13 | 16 | 17 | 15 | 13 | 17 | 15 | 17 | 22 | 20 |
| Rainy days | 7 | 7 | 6 | 12 | 14 | 15 | 18 | 14 | 15 | 12 | 6 | 6 |
| Snow days | 5 | 6 | 12 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 5 |
The best time to visit Crystal Lake during the most sunny months:
Months with the longest average daylight duration in Crystal Lake:
The largest precipitation sum in Crystal Lake is at