Average annual temperature is 16.3 °C
Absolute maximum temperature: 39.0 °C
Absolute minimum temperature: -7.9 °C
Number of sunny days: 214 days
Number of rainy days: 149 days
Number of snow days: 2 days
Look at detailed online map of Dennis
* Weather data for Dennis 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) | 20.1 | 20.6 | 24.4 | 26.8 | 30.7 | 36.9 | 37.7 | 39.0 | 34.5 | 30.9 | 26.3 | 19.0 |
| Average daytime temperature (°C) | 10.7 | 12.8 | 14.9 | 20.8 | 26.0 | 31.0 | 33.1 | 33.2 | 29.5 | 21.6 | 16.5 | 11.8 |
| Average temperature (°C) | 5.5 | 6.6 | 9.7 | 14.9 | 20.3 | 25.1 | 27.4 | 27.6 | 23.6 | 16.8 | 10.8 | 7.0 |
| Average night temperature (°C) | 1.7 | 2.2 | 5.6 | 10.0 | 15.6 | 20.3 | 22.9 | 23.2 | 19.2 | 13.1 | 6.7 | 3.6 |
| Absolute minimum temperature (°C) | -7.9 | -6.1 | -4.6 | 4.8 | 6.6 | 16.1 | 19.1 | 17.0 | 15.5 | 0.1 | -2.6 | -2.1 |
| 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 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| 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) | 5.8 | 6.7 | 7.3 | 9.6 | 10.3 | 12.4 | 11.4 | 11.7 | 10.4 | 8.0 | 7.7 | 5.7 |
| Precipitation (mm) | 57 | 153 | 157 | 47 | 125 | 91 | 137 | 85 | 99 | 100 | 46 | 52 |
| Sunny days | 19 | 18 | 16 | 18 | 15 | 17 | 15 | 21 | 17 | 18 | 23 | 17 |
| Rainy days | 11 | 10 | 15 | 12 | 16 | 13 | 16 | 10 | 13 | 13 | 7 | 13 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Dennis during the most sunny months:
The largest precipitation sum in Dennis is at