Average annual temperature is 8.1 °C
Absolute maximum temperature: 29.8 °C
Absolute minimum temperature: -30.2 °C
Number of sunny days: 104 days
Number of rainy days: 227 days
Number of snow days: 34 days
Look at detailed online map of Town of Boylston
* Weather data for Town of Boylston 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) | 7.7 | 12.3 | 10.1 | 27.0 | 27.3 | 28.4 | 29.8 | 24.8 | 28.1 | 26.4 | 12.9 | 10.5 |
| Average daytime temperature (°C) | 1.0 | 2.3 | 2.7 | 13.9 | 17.1 | 21.8 | 24.4 | 21.7 | 20.6 | 14.3 | 5.3 | 4.0 |
| Average temperature (°C) | -2.3 | -3.5 | -1.1 | 7.9 | 11.6 | 16.9 | 20.2 | 17.7 | 16.3 | 10.7 | 1.5 | 1.1 |
| Average night temperature (°C) | -5.9 | -8.0 | -4.8 | 3.2 | 6.5 | 13.1 | 16.5 | 14.6 | 12.7 | 7.8 | -1.6 | -1.3 |
| Absolute minimum temperature (°C) | -15.8 | -30.2 | -10.4 | -8.6 | -0.1 | 8.1 | 12.0 | 8.9 | 7.6 | -2.2 | -10.9 | -9.4 |
| 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 | 14.7 | 15.4 | 15.1 | 13.9 | 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) | 2.3 | 4.8 | 5.4 | 8.4 | 11.3 | 10.5 | 11.1 | 10.1 | 9.2 | 5.4 | 4.8 | 2.6 |
| Precipitation (mm) | 164 | 112 | 128 | 124 | 88 | 154 | 147 | 228 | 72 | 200 | 148 | 194 |
| Sunny days | 5 | 4 | 8 | 13 | 21 | 6 | 5 | 4 | 17 | 8 | 6 | 7 |
| Rainy days | 19 | 14 | 14 | 16 | 10 | 24 | 26 | 27 | 13 | 23 | 19 | 22 |
| Snow days | 7 | 10 | 9 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 2 |
The best time to visit Town of Boylston during the most sunny months:
Months with the longest average daylight duration in Town of Boylston:
The largest precipitation sum in Town of Boylston is at