Average annual temperature is 13.4 °C
Absolute maximum temperature: 42.6 °C
Absolute minimum temperature: -6.0 °C
Number of sunny days: 222 days
Number of rainy days: 141 days
Number of snow days: 2 days
Look at detailed online map of Island Mountain
* Weather data for Island Mountain 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) | 21.7 | 21.1 | 18.0 | 30.9 | 33.3 | 37.6 | 39.7 | 42.6 | 37.4 | 33.5 | 25.8 | 21.6 |
| Average daytime temperature (°C) | 13.6 | 13.1 | 11.1 | 18.0 | 22.5 | 26.9 | 31.9 | 32.6 | 26.5 | 24.2 | 18.2 | 16.0 |
| Average temperature (°C) | 7.7 | 5.8 | 5.8 | 10.5 | 14.6 | 17.4 | 20.9 | 22.5 | 17.9 | 15.4 | 11.1 | 10.1 |
| Average night temperature (°C) | 3.8 | 1.3 | 1.9 | 5.1 | 9.3 | 10.6 | 12.8 | 15.1 | 12.0 | 9.5 | 6.3 | 6.5 |
| Absolute minimum temperature (°C) | -1.0 | -4.7 | -6.0 | 0.2 | 4.4 | 7.0 | 9.5 | 10.9 | 7.5 | 1.5 | -0.5 | 0.7 |
| 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 | 15.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 9.4 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.1 | 6.8 | 6.5 | 9.7 | 11.5 | 13.0 | 13.5 | 12.2 | 10.1 | 8.5 | 7.1 | 5.2 |
| Precipitation (mm) | 345 | 148 | 320 | 60 | 45 | 16 | 0 | 9 | 30 | 59 | 123 | 241 |
| Sunny days | 14 | 12 | 5 | 16 | 22 | 24 | 31 | 28 | 21 | 21 | 16 | 12 |
| Rainy days | 17 | 15 | 25 | 14 | 9 | 6 | 0 | 3 | 9 | 10 | 14 | 19 |
| Snow days | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Island Mountain during the most sunny months:
The largest precipitation sum in Island Mountain is at