Average annual temperature is 9.2 °C
Absolute maximum temperature: 31.1 °C
Absolute minimum temperature: -28.3 °C
Number of sunny days: 171 days
Number of rainy days: 174 days
Number of snow days: 20 days
Look at detailed online map of Town of Westport Island
* Weather data for Town of Westport Island 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) | 10.4 | 13.2 | 10.0 | 22.3 | 26.2 | 28.3 | 30.6 | 28.3 | 31.1 | 25.1 | 14.4 | 13.4 |
| Average daytime temperature (°C) | 3.3 | 2.0 | 4.8 | 11.0 | 17.8 | 19.7 | 25.5 | 23.4 | 22.2 | 16.6 | 7.1 | 5.0 |
| Average temperature (°C) | -0.1 | -3.0 | 1.1 | 6.6 | 12.5 | 15.4 | 21.6 | 19.6 | 17.8 | 12.7 | 3.3 | 1.5 |
| Average night temperature (°C) | -3.1 | -7.6 | -2.1 | 2.8 | 7.9 | 12.3 | 18.7 | 16.3 | 14.5 | 9.6 | -0.1 | -1.5 |
| Absolute minimum temperature (°C) | -8.7 | -28.3 | -5.4 | -4.6 | 2.6 | 7.1 | 14.8 | 12.3 | 9.2 | 1.3 | -5.6 | -9.6 |
| 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) | 9.3 | 10.5 | 11.9 | 13.4 | 14.7 | 15.4 | 15.1 | 14.0 | 12.5 | 11.0 | 9.7 | 9.0 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 4.2 | 6.7 | 7.5 | 8.0 | 11.4 | 8.5 | 9.7 | 9.8 | 8.8 | 6.9 | 6.7 | 4.6 |
| Precipitation (mm) | 175 | 43 | 86 | 107 | 112 | 185 | 185 | 149 | 137 | 117 | 59 | 141 |
| Sunny days | 10 | 14 | 16 | 15 | 20 | 8 | 9 | 12 | 17 | 15 | 21 | 14 |
| Rainy days | 14 | 7 | 11 | 15 | 11 | 22 | 22 | 19 | 13 | 16 | 8 | 16 |
| Snow days | 7 | 7 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Town of Westport Island during the most sunny months:
Months with the longest average daylight duration in Town of Westport Island:
The largest precipitation sum in Town of Westport Island is at