Average annual temperature is 9.4 °C
Absolute maximum temperature: 27.9 °C
Absolute minimum temperature: -28.6 °C
Number of sunny days: 173 days
Number of rainy days: 171 days
Number of snow days: 21 days
Look at detailed online map of Town of Harpswell
* Weather data for Town of Harpswell 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) | 9.4 | 8.7 | 7.8 | 19.5 | 19.4 | 23.4 | 25.8 | 23.6 | 27.9 | 22.4 | 13.4 | 12.5 |
| Average daytime temperature (°C) | 4.2 | 2.7 | 4.9 | 8.4 | 14.0 | 16.1 | 22.1 | 20.9 | 19.5 | 15.3 | 8.1 | 5.6 |
| Average temperature (°C) | 1.4 | -1.2 | 2.3 | 6.4 | 11.2 | 14.3 | 20.2 | 18.9 | 17.2 | 12.9 | 4.9 | 3.0 |
| Average night temperature (°C) | -0.7 | -4.4 | 0.0 | 4.8 | 9.1 | 13.0 | 18.9 | 17.2 | 15.4 | 10.9 | 2.6 | 1.0 |
| Absolute minimum temperature (°C) | -6.3 | -28.6 | -3.0 | -0.9 | 5.3 | 8.1 | 15.4 | 14.4 | 9.8 | 3.2 | -3.9 | -7.2 |
| 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) | 4.3 | 6.8 | 7.9 | 7.9 | 11.5 | 8.8 | 9.8 | 10.0 | 8.8 | 7.3 | 6.8 | 4.8 |
| Precipitation (mm) | 176 | 41 | 91 | 122 | 114 | 151 | 168 | 149 | 100 | 78 | 60 | 139 |
| Sunny days | 11 | 12 | 17 | 15 | 21 | 8 | 9 | 11 | 18 | 16 | 22 | 13 |
| Rainy days | 15 | 6 | 9 | 15 | 10 | 22 | 22 | 20 | 12 | 15 | 8 | 17 |
| Snow days | 5 | 10 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Town of Harpswell during the most sunny months:
Months with the longest average daylight duration in Town of Harpswell:
The largest precipitation sum in Town of Harpswell is at