Average annual temperature is 18.9 °C
Absolute maximum temperature: 41.9 °C
Absolute minimum temperature: -4.7 °C
Number of sunny days: 299 days
Number of rainy days: 65 days
Number of snow days: 1 day
Look at detailed online map of Derry
* Weather data for Derry 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) | 19.8 | 21.7 | 25.3 | 33.1 | 33.8 | 41.5 | 41.9 | 41.3 | 38.7 | 31.9 | 29.1 | 23.0 |
| Average daytime temperature (°C) | 13.5 | 15.4 | 20.2 | 26.4 | 30.5 | 35.1 | 39.4 | 35.7 | 33.7 | 27.6 | 19.2 | 14.9 |
| Average temperature (°C) | 6.7 | 7.8 | 12.7 | 18.3 | 23.2 | 27.9 | 32.9 | 29.3 | 26.3 | 20.3 | 12.3 | 7.7 |
| Average night temperature (°C) | 1.0 | 1.9 | 5.6 | 9.7 | 15.0 | 19.4 | 25.1 | 22.6 | 18.5 | 13.1 | 6.0 | 1.1 |
| Absolute minimum temperature (°C) | -4.6 | -4.7 | -3.3 | -2.7 | 7.9 | 13.3 | 22.2 | 17.8 | 14.5 | 1.4 | -0.4 | -2.7 |
| 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) | 10.3 | 11.0 | 12.0 | 13.0 | 13.8 | 14.3 | 14.1 | 13.3 | 12.4 | 11.4 | 10.5 | 10.0 |
| Daylight minimum duration (h) | 10.0 | 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) | 8.4 | 8.9 | 10.0 | 11.9 | 12.4 | 12.7 | 12.6 | 11.6 | 11.1 | 10.2 | 9.0 | 8.3 |
| Precipitation (mm) | 12 | 16 | 14 | 0 | 18 | 1 | 0 | 9 | 10 | 0 | 9 | 22 |
| Sunny days | 24 | 17 | 24 | 29 | 23 | 29 | 29 | 20 | 23 | 30 | 25 | 26 |
| Rainy days | 6 | 11 | 7 | 1 | 8 | 1 | 2 | 11 | 7 | 1 | 5 | 5 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Derry is at