Average annual temperature is 11.9 °C
Absolute maximum temperature: 39.7 °C
Absolute minimum temperature: -11.2 °C
Number of sunny days: 181 days
Number of rainy days: 181 days
Number of snow days: 3 days
Look at detailed online map of Bolly (historical)
* Weather data for Bolly (historical) 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) | 14.8 | 15.5 | 17.7 | 28.2 | 31.8 | 31.0 | 35.5 | 39.7 | 31.7 | 29.1 | 17.6 | 18.4 |
| Average daytime temperature (°C) | 9.6 | 9.3 | 9.5 | 13.4 | 22.1 | 25.7 | 30.0 | 30.7 | 23.5 | 18.5 | 12.7 | 12.0 |
| Average temperature (°C) | 5.3 | 3.7 | 4.3 | 8.1 | 14.9 | 17.2 | 21.2 | 22.3 | 16.7 | 12.5 | 8.0 | 7.8 |
| Average night temperature (°C) | 2.3 | 0.1 | 0.2 | 4.6 | 9.2 | 10.2 | 13.5 | 15.2 | 11.5 | 8.4 | 4.8 | 4.9 |
| Absolute minimum temperature (°C) | -6.0 | -11.2 | -4.3 | -0.5 | 4.2 | 6.2 | 9.9 | 11.2 | 6.5 | -1.8 | -3.8 | -1.8 |
| 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 | 13.5 | 14.8 | 15.4 | 15.1 | 14.0 | 12.5 | 11.0 | 9.6 | 8.9 |
| 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) | 3.5 | 5.4 | 4.9 | 5.1 | 10.1 | 13.1 | 13.4 | 12.0 | 9.1 | 6.8 | 4.7 | 2.8 |
| Precipitation (mm) | 146 | 128 | 201 | 257 | 29 | 25 | 5 | 10 | 78 | 147 | 163 | 328 |
| Sunny days | 7 | 11 | 4 | 6 | 19 | 26 | 29 | 26 | 18 | 14 | 13 | 8 |
| Rainy days | 24 | 15 | 26 | 24 | 12 | 4 | 2 | 5 | 12 | 17 | 17 | 23 |
| Snow days | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Bolly (historical) during the most sunny months:
Months with the longest average daylight duration in Bolly (historical):
The largest precipitation sum in Bolly (historical) is at