Average annual temperature is 12.2 °C
Absolute maximum temperature: 32.3 °C
Absolute minimum temperature: -23.0 °C
Number of sunny days: 159 days
Number of rainy days: 203 days
Number of snow days: 3 days
Look at detailed online map of South Dennis
* Weather data for South 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) | 12.9 | 16.8 | 12.7 | 25.3 | 24.8 | 25.6 | 31.0 | 28.6 | 32.3 | 24.7 | 17.2 | 15.7 |
| Average daytime temperature (°C) | 7.5 | 6.3 | 7.4 | 13.8 | 17.7 | 21.1 | 26.8 | 24.9 | 22.4 | 18.1 | 10.4 | 8.5 |
| Average temperature (°C) | 4.6 | 2.5 | 4.5 | 10.1 | 13.7 | 17.5 | 23.3 | 21.5 | 19.5 | 14.8 | 7.2 | 5.9 |
| Average night temperature (°C) | 1.8 | -1.3 | 1.7 | 6.8 | 10.4 | 14.5 | 20.6 | 18.8 | 17.3 | 12.2 | 4.4 | 3.4 |
| Absolute minimum temperature (°C) | -4.3 | -23.0 | -1.7 | -0.3 | 5.8 | 9.8 | 17.9 | 15.7 | 13.0 | 6.7 | -2.1 | -2.6 |
| 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) | 9.5 | 10.6 | 11.9 | 13.3 | 14.5 | 15.2 | 14.9 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.9 | 5.6 | 6.9 | 8.7 | 11.7 | 10.0 | 10.2 | 9.8 | 7.7 | 7.7 | 7.1 | 4.9 |
| Precipitation (mm) | 232 | 65 | 98 | 63 | 59 | 70 | 110 | 82 | 146 | 54 | 35 | 114 |
| Sunny days | 6 | 11 | 14 | 18 | 20 | 11 | 11 | 11 | 13 | 13 | 17 | 14 |
| Rainy days | 25 | 14 | 17 | 12 | 11 | 19 | 20 | 20 | 17 | 18 | 13 | 17 |
| Snow days | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit South Dennis during the most sunny months:
The largest precipitation sum in South Dennis is at