Average annual temperature is 10.7 °C
Absolute maximum temperature: 38.8 °C
Absolute minimum temperature: -21.4 °C
Number of sunny days: 231 days
Number of rainy days: 110 days
Number of snow days: 24 days
Look at detailed online map of Westerville
* Weather data for Westerville 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) | 6.0 | 12.7 | 17.2 | 28.0 | 27.4 | 31.9 | 37.2 | 38.8 | 36.4 | 29.2 | 18.5 | 14.9 |
| Average daytime temperature (°C) | -1.5 | 4.0 | 7.8 | 17.1 | 23.2 | 27.2 | 29.8 | 31.1 | 27.0 | 17.0 | 11.3 | 5.9 |
| Average temperature (°C) | -4.8 | -2.6 | 0.6 | 9.6 | 17.1 | 21.3 | 23.5 | 24.7 | 20.6 | 11.1 | 5.2 | 0.7 |
| Average night temperature (°C) | -7.9 | -7.0 | -4.2 | 3.3 | 11.4 | 15.9 | 18.2 | 19.2 | 15.0 | 6.3 | 0.8 | -2.9 |
| Absolute minimum temperature (°C) | -21.4 | -21.1 | -11.2 | -6.1 | 1.0 | 9.2 | 12.1 | 13.8 | 9.6 | -8.9 | -7.6 | -7.9 |
| 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) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| 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) | 5.4 | 8.0 | 9.0 | 10.7 | 11.0 | 12.2 | 12.2 | 11.8 | 10.5 | 7.7 | 7.2 | 5.0 |
| Precipitation (mm) | 68 | 25 | 27 | 6 | 51 | 101 | 110 | 44 | 62 | 63 | 18 | 33 |
| Sunny days | 18 | 17 | 22 | 25 | 13 | 13 | 14 | 22 | 21 | 20 | 24 | 22 |
| Rainy days | 6 | 4 | 4 | 4 | 18 | 17 | 17 | 9 | 9 | 10 | 4 | 8 |
| Snow days | 7 | 7 | 5 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 1 |
The best time to visit Westerville during the most sunny months:
The largest precipitation sum in Westerville is at