Average annual temperature is 10.3 °C
Absolute maximum temperature: 35.5 °C
Absolute minimum temperature: -25.9 °C
Number of sunny days: 186 days
Number of rainy days: 157 days
Number of snow days: 22 days
Look at detailed online map of Delavan Lake
* Weather data for Delavan 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) | 9.3 | 9.9 | 19.7 | 25.2 | 30.9 | 32.0 | 32.3 | 35.5 | 33.1 | 26.9 | 18.2 | 13.0 |
| Average daytime temperature (°C) | 1.4 | 3.2 | 6.1 | 14.8 | 21.9 | 26.9 | 28.0 | 26.9 | 23.6 | 15.6 | 8.2 | 5.3 |
| Average temperature (°C) | -2.1 | -1.8 | 1.3 | 8.7 | 15.2 | 20.6 | 22.7 | 21.8 | 18.9 | 11.6 | 3.8 | 2.1 |
| Average night temperature (°C) | -4.7 | -5.6 | -2.6 | 3.4 | 9.7 | 15.0 | 17.7 | 17.4 | 15.3 | 8.1 | 0.3 | -0.3 |
| Absolute minimum temperature (°C) | -25.9 | -23.1 | -12.6 | -2.4 | 0.3 | 6.6 | 13.2 | 11.1 | 9.9 | -2.8 | -12.1 | -8.3 |
| 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 | 13.9 | 12.5 | 11.1 | 9.8 | 9.1 |
| 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 | 9.0 |
| Sunshine mean duration (h) | 3.6 | 7.2 | 6.5 | 8.5 | 10.8 | 12.0 | 12.1 | 11.1 | 8.2 | 6.9 | 6.7 | 3.8 |
| Precipitation (mm) | 59 | 92 | 87 | 105 | 42 | 25 | 59 | 99 | 115 | 88 | 40 | 68 |
| Sunny days | 14 | 17 | 13 | 14 | 21 | 20 | 13 | 15 | 12 | 12 | 21 | 14 |
| Rainy days | 8 | 8 | 14 | 15 | 10 | 10 | 18 | 16 | 18 | 18 | 8 | 14 |
| Snow days | 9 | 3 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 3 |
The best time to visit Delavan Lake during the most sunny months:
The largest precipitation sum in Delavan Lake is at