Average annual temperature is 12.7 °C
Absolute maximum temperature: 34.5 °C
Absolute minimum temperature: -11.1 °C
Number of sunny days: 182 days
Number of rainy days: 178 days
Number of snow days: 5 days
Look at detailed online map of Heather Knoll
* Weather data for Heather Knoll 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) | 18.2 | 18.3 | 18.7 | 30.7 | 31.2 | 34.5 | 33.8 | 32.7 | 34.2 | 27.9 | 21.1 | 15.6 |
| Average daytime temperature (°C) | 8.2 | 9.3 | 10.6 | 19.5 | 22.8 | 26.5 | 30.2 | 28.2 | 24.4 | 19.4 | 11.2 | 8.7 |
| Average temperature (°C) | 4.3 | 3.8 | 4.9 | 12.8 | 15.7 | 20.1 | 24.4 | 22.8 | 19.2 | 13.8 | 5.6 | 4.3 |
| Average night temperature (°C) | 0.9 | -0.9 | 0.0 | 7.2 | 8.7 | 14.4 | 19.5 | 18.0 | 15.1 | 9.1 | 1.1 | 0.7 |
| Absolute minimum temperature (°C) | -4.8 | -11.1 | -5.7 | -1.4 | 3.0 | 8.4 | 15.9 | 13.7 | 9.4 | 2.8 | -5.4 | -4.6 |
| 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) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 9.3 |
| 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) | 4.6 | 6.7 | 7.4 | 8.7 | 11.4 | 10.5 | 11.8 | 10.4 | 7.8 | 8.1 | 7.6 | 4.0 |
| Precipitation (mm) | 97 | 37 | 59 | 126 | 24 | 136 | 101 | 91 | 146 | 81 | 76 | 170 |
| Sunny days | 11 | 16 | 12 | 15 | 23 | 12 | 8 | 14 | 15 | 20 | 21 | 15 |
| Rainy days | 20 | 10 | 18 | 15 | 8 | 18 | 23 | 17 | 15 | 11 | 8 | 15 |
| Snow days | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Heather Knoll during the most sunny months:
The largest precipitation sum in Heather Knoll is at