Average annual temperature is 21.7 °C
Absolute maximum temperature: 40.4 °C
Absolute minimum temperature: 0.1 °C
Number of sunny days: 145 days
Number of rainy days: 220 days
Look at detailed online map of Delaware
* Weather data for Delaware 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) | 23.9 | 26.1 | 27.9 | 28.6 | 32.2 | 36.2 | 38.2 | 40.4 | 35.9 | 32.5 | 28.0 | 24.9 |
| Average daytime temperature (°C) | 19.5 | 20.2 | 22.9 | 24.5 | 29.1 | 32.6 | 34.2 | 36.6 | 33.3 | 26.8 | 21.1 | 18.1 |
| Average temperature (°C) | 14.8 | 15.5 | 18.4 | 20.0 | 24.3 | 27.9 | 29.6 | 31.0 | 27.5 | 21.6 | 16.0 | 13.1 |
| Average night temperature (°C) | 11.1 | 12.2 | 14.9 | 16.4 | 20.0 | 24.2 | 25.5 | 26.8 | 23.0 | 17.4 | 12.3 | 9.2 |
| Absolute minimum temperature (°C) | 1.0 | 2.5 | 0.1 | 8.4 | 15.1 | 19.4 | 22.8 | 22.5 | 19.2 | 8.4 | 4.3 | 1.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.5 | 11.1 | 12.0 | 12.9 | 13.7 | 14.0 | 13.9 | 13.2 | 12.3 | 11.4 | 10.7 | 10.3 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 6.9 | 8.1 | 9.6 | 9.4 | 10.9 | 11.8 | 12.1 | 12.1 | 11.0 | 9.1 | 6.7 | 7.4 |
| Precipitation (mm) | 137 | 158 | 67 | 128 | 70 | 66 | 99 | 33 | 56 | 46 | 111 | 119 |
| Sunny days | 12 | 9 | 8 | 9 | 10 | 8 | 9 | 14 | 9 | 20 | 17 | 20 |
| Rainy days | 19 | 19 | 23 | 21 | 21 | 22 | 22 | 17 | 21 | 11 | 13 | 11 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Delaware during the most sunny months:
The largest precipitation sum in Delaware is at