Average annual temperature is 13.7 °C
Absolute maximum temperature: 32.4 °C
Absolute minimum temperature: -10.6 °C
Number of sunny days: 144 days
Number of rainy days: 211 days
Number of snow days: 10 days
Look at detailed online map of Westerly
* Weather data for Westerly 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) | 20.4 | 23.8 | 23.7 | 28.4 | 27.8 | 31.4 | 32.4 | 32.0 | 30.8 | 27.7 | 24.6 | 18.7 |
| Average daytime temperature (°C) | 10.8 | 13.6 | 13.4 | 20.3 | 22.0 | 25.5 | 29.7 | 27.5 | 24.5 | 19.8 | 14.0 | 10.8 |
| Average temperature (°C) | 5.4 | 7.6 | 7.5 | 13.6 | 16.3 | 20.0 | 24.0 | 22.5 | 19.4 | 14.4 | 7.8 | 5.8 |
| Average night temperature (°C) | 1.9 | 2.9 | 2.7 | 8.1 | 11.4 | 15.0 | 19.1 | 18.5 | 15.0 | 10.0 | 2.9 | 2.1 |
| Absolute minimum temperature (°C) | -10.6 | -9.4 | -8.7 | 0.6 | 3.7 | 8.7 | 14.6 | 12.5 | 10.1 | 3.5 | -7.2 | -5.6 |
| 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 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.6 |
| 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) | 4.5 | 6.8 | 7.3 | 9.5 | 10.1 | 11.1 | 12.1 | 10.1 | 9.9 | 8.0 | 7.4 | 5.2 |
| Precipitation (mm) | 92 | 97 | 76 | 67 | 116 | 64 | 98 | 125 | 78 | 51 | 49 | 77 |
| Sunny days | 7 | 10 | 14 | 15 | 14 | 10 | 5 | 8 | 14 | 14 | 20 | 13 |
| Rainy days | 20 | 16 | 16 | 15 | 17 | 20 | 26 | 23 | 16 | 17 | 9 | 16 |
| Snow days | 4 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
The best time to visit Westerly during the most sunny months:
The largest precipitation sum in Westerly is at