Average annual temperature is 18.2 °C
Absolute maximum temperature: 36.9 °C
Absolute minimum temperature: -2.8 °C
Number of sunny days: 183 days
Number of rainy days: 182 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) | 22.1 | 26.7 | 27.7 | 30.1 | 31.6 | 33.8 | 36.4 | 36.9 | 34.0 | 28.7 | 25.3 | 22.7 |
| Average daytime temperature (°C) | 15.7 | 19.3 | 20.9 | 23.8 | 26.1 | 29.9 | 33.8 | 33.6 | 29.2 | 23.9 | 18.2 | 14.8 |
| Average temperature (°C) | 10.1 | 13.6 | 14.3 | 17.5 | 20.4 | 24.0 | 27.5 | 27.2 | 23.1 | 18.1 | 12.5 | 9.6 |
| Average night temperature (°C) | 5.9 | 9.2 | 9.2 | 12.3 | 15.9 | 19.2 | 22.5 | 22.5 | 18.2 | 13.4 | 8.2 | 5.5 |
| Absolute minimum temperature (°C) | -2.8 | -0.7 | -2.0 | 7.0 | 7.1 | 15.5 | 20.7 | 19.5 | 13.7 | 7.6 | -1.2 | -1.2 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.3 | 14.1 | 13.4 | 12.4 | 11.4 | 10.5 | 10.0 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 6.0 | 7.1 | 8.4 | 9.1 | 10.1 | 10.6 | 11.3 | 11.2 | 10.1 | 8.8 | 6.9 | 6.6 |
| Precipitation (mm) | 164 | 100 | 160 | 124 | 50 | 140 | 71 | 121 | 32 | 89 | 52 | 73 |
| Sunny days | 16 | 14 | 20 | 13 | 9 | 8 | 11 | 10 | 20 | 23 | 19 | 20 |
| Rainy days | 15 | 14 | 11 | 17 | 22 | 22 | 20 | 21 | 10 | 8 | 11 | 11 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Dennis during the most sunny months:
The largest precipitation sum in Dennis is at