Average annual temperature is 11.4 °C
Absolute maximum temperature: 36.8 °C
Absolute minimum temperature: -17.1 °C
Number of sunny days: 179 days
Number of rainy days: 173 days
Number of snow days: 13 days
Look at detailed online map of Blue Island
* Weather data for Blue 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) | 13.5 | 14.9 | 21.9 | 26.2 | 32.3 | 32.3 | 33.3 | 36.8 | 33.8 | 28.3 | 20.1 | 15.0 |
| Average daytime temperature (°C) | 3.7 | 6.5 | 8.1 | 16.9 | 21.4 | 26.6 | 28.1 | 27.1 | 24.1 | 17.3 | 10.5 | 7.1 |
| Average temperature (°C) | 0.1 | 1.2 | 3.0 | 10.1 | 15.2 | 20.3 | 22.6 | 22.1 | 19.3 | 12.8 | 5.4 | 3.7 |
| Average night temperature (°C) | -2.7 | -2.7 | -0.5 | 4.6 | 10.1 | 15.0 | 18.0 | 18.1 | 15.4 | 9.5 | 1.4 | 1.1 |
| Absolute minimum temperature (°C) | -16.4 | -17.1 | -10.6 | -3.1 | 2.0 | 9.0 | 14.6 | 13.0 | 9.7 | -2.7 | -10.1 | -7.6 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.9 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.0 | 7.6 | 6.5 | 9.2 | 10.3 | 11.7 | 11.5 | 10.5 | 8.1 | 6.3 | 7.1 | 3.8 |
| Precipitation (mm) | 74 | 92 | 105 | 58 | 45 | 49 | 247 | 126 | 127 | 125 | 42 | 77 |
| Sunny days | 11 | 18 | 11 | 15 | 18 | 19 | 12 | 16 | 12 | 10 | 22 | 15 |
| Rainy days | 12 | 8 | 19 | 15 | 13 | 11 | 19 | 15 | 18 | 20 | 8 | 15 |
| Snow days | 8 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
The best time to visit Blue Island during the most sunny months:
The largest precipitation sum in Blue Island is at