Average annual temperature is 12.0 °C
Absolute maximum temperature: 32.4 °C
Absolute minimum temperature: -11.2 °C
Number of sunny days: 168 days
Number of rainy days: 183 days
Number of snow days: 14 days
Look at detailed online map of Radnor
* Weather data for Radnor 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) | 16.8 | 20.3 | 20.0 | 25.7 | 28.9 | 32.1 | 32.4 | 31.4 | 32.1 | 28.0 | 20.1 | 16.1 |
| Average daytime temperature (°C) | 5.8 | 10.3 | 10.2 | 17.1 | 21.4 | 25.6 | 28.1 | 26.8 | 24.4 | 18.1 | 11.3 | 8.5 |
| Average temperature (°C) | 2.1 | 3.4 | 4.2 | 10.9 | 15.4 | 19.8 | 23.1 | 21.4 | 19.0 | 13.4 | 5.8 | 4.4 |
| Average night temperature (°C) | -0.9 | -1.3 | -0.1 | 5.3 | 9.8 | 14.3 | 18.4 | 16.6 | 14.3 | 9.2 | 1.6 | 1.5 |
| Absolute minimum temperature (°C) | -11.2 | -10.5 | -7.9 | -0.9 | 2.0 | 8.8 | 14.1 | 10.2 | 8.3 | -1.6 | -7.4 | -4.5 |
| 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) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.2 | 7.1 | 7.2 | 9.0 | 10.3 | 10.4 | 12.0 | 10.7 | 9.2 | 7.0 | 7.2 | 4.3 |
| Precipitation (mm) | 130 | 51 | 139 | 96 | 60 | 104 | 83 | 93 | 32 | 62 | 39 | 72 |
| Sunny days | 6 | 18 | 11 | 15 | 21 | 14 | 6 | 16 | 16 | 13 | 21 | 11 |
| Rainy days | 18 | 10 | 16 | 15 | 10 | 16 | 25 | 15 | 14 | 17 | 8 | 19 |
| Snow days | 7 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
The best time to visit Radnor during the most sunny months:
The largest precipitation sum in Radnor is at