Average annual temperature is 7.3 °C
Absolute maximum temperature: 32.8 °C
Absolute minimum temperature: -23.1 °C
Number of sunny days: 176 days
Number of rainy days: 147 days
Number of snow days: 42 days
Look at detailed online map of Iron Mountain
* Weather data for Iron 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) | 2.5 | 7.2 | 6.9 | 27.2 | 30.4 | 31.7 | 31.6 | 29.5 | 32.8 | 28.5 | 15.1 | 10.0 |
| Average daytime temperature (°C) | -2.0 | -0.9 | 2.3 | 10.9 | 20.1 | 25.3 | 25.8 | 24.9 | 22.3 | 13.3 | 5.7 | 3.4 |
| Average temperature (°C) | -5.5 | -6.0 | -3.1 | 4.6 | 12.8 | 18.6 | 19.6 | 18.8 | 16.6 | 9.0 | 1.1 | -0.1 |
| Average night temperature (°C) | -8.0 | -10.3 | -7.6 | -0.2 | 6.8 | 12.4 | 14.3 | 14.0 | 12.4 | 5.8 | -2.0 | -2.7 |
| Absolute minimum temperature (°C) | -23.1 | -22.1 | -13.2 | -10.5 | -2.0 | 5.2 | 10.2 | 7.5 | 6.2 | -4.2 | -10.0 | -9.1 |
| 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 | 8.0 |
| Daylight mean duration (h) | 9.1 | 10.4 | 11.9 | 13.5 | 14.9 | 15.7 | 15.3 | 14.1 | 12.5 | 10.9 | 9.5 | 8.7 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 3.2 | 6.8 | 6.9 | 7.2 | 10.7 | 12.0 | 12.5 | 10.3 | 8.3 | 6.2 | 5.5 | 3.7 |
| Precipitation (mm) | 43 | 45 | 53 | 143 | 68 | 61 | 67 | 74 | 47 | 82 | 24 | 28 |
| Sunny days | 13 | 13 | 15 | 11 | 19 | 18 | 7 | 17 | 15 | 11 | 20 | 17 |
| Rainy days | 6 | 6 | 5 | 17 | 12 | 12 | 24 | 14 | 15 | 19 | 7 | 10 |
| Snow days | 12 | 9 | 11 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 4 |
The best time to visit Iron Mountain during the most sunny months:
Months with the longest average daylight duration in Iron Mountain:
The largest precipitation sum in Iron Mountain is at