Average annual temperature is 16.6 °C
Absolute maximum temperature: 36.3 °C
Absolute minimum temperature: -4.1 °C
Number of sunny days: 194 days
Number of rainy days: 171 days
Look at detailed online map of Mountain Island
* Weather data for Mountain 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) | 20.2 | 25.9 | 27.5 | 29.2 | 30.6 | 32.8 | 35.6 | 36.3 | 35.1 | 28.2 | 28.0 | 21.1 |
| Average daytime temperature (°C) | 13.5 | 16.5 | 17.8 | 22.5 | 24.9 | 28.7 | 33.2 | 31.3 | 27.9 | 23.3 | 16.9 | 13.4 |
| Average temperature (°C) | 8.3 | 11.2 | 11.9 | 16.0 | 19.1 | 22.2 | 26.6 | 25.5 | 22.0 | 17.1 | 10.9 | 7.8 |
| Average night temperature (°C) | 4.4 | 6.8 | 6.7 | 10.3 | 14.0 | 17.1 | 21.5 | 20.9 | 17.1 | 12.0 | 6.2 | 3.5 |
| Absolute minimum temperature (°C) | -3.5 | -4.1 | -2.6 | 3.4 | 6.9 | 12.2 | 19.1 | 18.4 | 13.2 | 6.4 | -3.6 | -3.7 |
| 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 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.1 | 6.6 | 8.6 | 9.1 | 10.0 | 10.7 | 12.2 | 10.9 | 10.2 | 9.4 | 7.7 | 6.4 |
| Precipitation (mm) | 126 | 92 | 81 | 142 | 31 | 113 | 48 | 132 | 46 | 15 | 52 | 158 |
| Sunny days | 16 | 12 | 17 | 11 | 14 | 14 | 13 | 12 | 17 | 26 | 24 | 18 |
| Rainy days | 15 | 16 | 14 | 19 | 17 | 16 | 18 | 19 | 13 | 5 | 6 | 13 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Mountain Island during the most sunny months:
The largest precipitation sum in Mountain Island is at