Average annual temperature is 15.0 °C
Absolute maximum temperature: 38.6 °C
Absolute minimum temperature: -9.0 °C
Number of sunny days: 206 days
Number of rainy days: 157 days
Number of snow days: 2 days
Look at detailed online map of Willoughby
* Weather data for Willoughby 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) | 19.6 | 25.5 | 28.0 | 32.7 | 30.2 | 31.9 | 38.6 | 36.8 | 37.3 | 29.1 | 27.7 | 20.6 |
| Average daytime temperature (°C) | 11.3 | 14.3 | 15.6 | 23.7 | 23.7 | 28.1 | 33.4 | 31.7 | 27.9 | 22.5 | 14.7 | 11.6 |
| Average temperature (°C) | 6.0 | 7.9 | 8.6 | 16.0 | 17.2 | 21.3 | 26.4 | 24.9 | 21.6 | 15.7 | 8.1 | 5.6 |
| Average night temperature (°C) | 2.0 | 2.7 | 3.0 | 9.0 | 11.4 | 15.0 | 20.2 | 19.3 | 16.2 | 9.9 | 2.9 | 1.0 |
| Absolute minimum temperature (°C) | -3.5 | -9.0 | -5.8 | 1.0 | 5.0 | 10.8 | 16.8 | 14.3 | 10.7 | 2.7 | -5.7 | -5.3 |
| 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 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.6 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.6 | 7.0 | 7.9 | 9.8 | 10.1 | 10.6 | 12.2 | 11.1 | 9.3 | 8.9 | 8.1 | 5.9 |
| Precipitation (mm) | 66 | 84 | 44 | 117 | 53 | 129 | 58 | 24 | 64 | 15 | 70 | 136 |
| Sunny days | 15 | 15 | 16 | 19 | 15 | 12 | 12 | 16 | 17 | 24 | 26 | 19 |
| Rainy days | 15 | 12 | 15 | 11 | 16 | 18 | 19 | 15 | 13 | 7 | 4 | 12 |
| Snow days | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Willoughby during the most sunny months:
The largest precipitation sum in Willoughby is at