Average annual temperature is 8.5 °C
Absolute maximum temperature: 33.1 °C
Absolute minimum temperature: -11.7 °C
Number of sunny days: 250 days
Number of rainy days: 93 days
Number of snow days: 22 days
Look at detailed online map of Boulder Bay
* Weather data for Boulder Bay 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) | 9.2 | 10.1 | 7.3 | 20.1 | 21.1 | 27.5 | 33.1 | 28.3 | 25.9 | 23.7 | 20.5 | 15.9 |
| Average daytime temperature (°C) | 2.8 | 3.0 | 3.3 | 11.3 | 15.1 | 18.6 | 28.0 | 24.2 | 21.5 | 18.0 | 11.9 | 10.8 |
| Average temperature (°C) | -1.1 | -1.9 | -0.6 | 5.0 | 9.6 | 12.7 | 21.6 | 18.3 | 15.4 | 11.4 | 5.9 | 4.9 |
| Average night temperature (°C) | -4.4 | -5.5 | -3.8 | -0.3 | 4.1 | 7.1 | 14.7 | 12.7 | 10.0 | 6.2 | 1.8 | 0.9 |
| Absolute minimum temperature (°C) | -10.6 | -11.7 | -10.5 | -11.4 | -2.6 | 2.9 | 9.2 | 8.1 | 5.3 | -1.2 | -2.6 | -3.9 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 6.4 | 8.2 | 8.4 | 12.0 | 12.6 | 13.4 | 13.1 | 11.7 | 10.9 | 10.4 | 9.1 | 8.3 |
| Precipitation (mm) | 267 | 135 | 243 | 6 | 50 | 22 | 10 | 114 | 19 | 2 | 10 | 9 |
| Sunny days | 14 | 14 | 14 | 28 | 17 | 19 | 26 | 17 | 19 | 30 | 26 | 26 |
| Rainy days | 11 | 8 | 10 | 0 | 13 | 11 | 5 | 14 | 11 | 1 | 4 | 5 |
| Snow days | 6 | 6 | 7 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Boulder Bay during the most sunny months:
The largest precipitation sum in Boulder Bay is at