Average annual temperature is 10.2 °C
Absolute maximum temperature: 32.7 °C
Absolute minimum temperature: -26.2 °C
Number of sunny days: 160 days
Number of rainy days: 188 days
Number of snow days: 17 days
Look at detailed online map of Town of Londonderry
* Weather data for Town of Londonderry 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) | 11.2 | 14.6 | 15.9 | 30.4 | 30.8 | 32.7 | 31.6 | 28.5 | 32.4 | 27.8 | 17.9 | 15.7 |
| Average daytime temperature (°C) | 4.6 | 4.7 | 6.9 | 15.0 | 20.8 | 23.1 | 27.5 | 25.1 | 22.7 | 18.2 | 8.4 | 7.2 |
| Average temperature (°C) | 0.5 | -1.2 | 1.9 | 9.0 | 14.0 | 17.4 | 22.6 | 20.1 | 18.0 | 13.1 | 3.3 | 2.6 |
| Average night temperature (°C) | -3.2 | -6.0 | -2.4 | 4.4 | 8.2 | 13.1 | 18.6 | 16.0 | 14.4 | 9.2 | -0.4 | -0.4 |
| Absolute minimum temperature (°C) | -15.0 | -26.2 | -7.5 | -4.0 | 1.3 | 7.1 | 13.3 | 12.0 | 7.3 | 0.7 | -5.5 | -7.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.4 | 10.5 | 11.9 | 13.4 | 14.6 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.1 | 6.3 | 7.0 | 8.0 | 11.4 | 8.4 | 10.0 | 9.6 | 7.6 | 7.3 | 7.0 | 5.2 |
| Precipitation (mm) | 171 | 46 | 128 | 95 | 84 | 152 | 217 | 168 | 198 | 91 | 43 | 155 |
| Sunny days | 9 | 13 | 15 | 15 | 19 | 6 | 5 | 10 | 12 | 17 | 22 | 17 |
| Rainy days | 16 | 10 | 12 | 15 | 12 | 24 | 26 | 21 | 18 | 14 | 7 | 13 |
| Snow days | 6 | 5 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Town of Londonderry during the most sunny months:
Months with the longest average daylight duration in Town of Londonderry:
The largest precipitation sum in Town of Londonderry is at