Last updated: June 24, 2025
In August, the average temperature in Iron Mountain, United States hovers around 19°C (67°F). This month can bring a wide range of temperatures, with lows dipping to 3°C (38°F) and highs reaching up to 32°C (90°F). Expect about 118 mm (4.6 in) of precipitation spread over approximately 12 days, contributing to the average humidity level of 73%.
In August in Iron Mountain, the average temperature is 19°C (67°F), with maximums reaching 32°C (90°F) and minimums dropping as low as 3°C (38°F). This diverse temperature range makes it essential for travelers to pack layers to stay comfortable during their visit.
In Iron Mountain in August, the precipitation amount is 118 mm (4.6 in) spread over 12 days.
In Iron Mountain in August humidity is 73%. With an average temperature of 19°C (67°F), this humidity feels like a warm blanket wrapped around you, making travel slightly uncomfortable and sticky, but still manageable as long as you stay hydrated and take breaks in the shade.
In Iron Mountain in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Iron Mountain.
UV Risk Categories
Weather in Iron Mountain varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Iron Mountain, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (17°F) | 33 mm (1.3 inches) | 89% | low |
| February Weather | -9°C (17°F) | 49 mm (1.9 inches) | 90% | moderate |
| March Weather | -2°C (28°F) | 48 mm (1.9 inches) | 87% | moderate |
| April Weather | 4°C (39°F) | 90 mm (3.5 inches) | 84% | high |
| May Weather | 12°C (55°F) | 85 mm (3.3 inches) | 77% | very high |
| June Weather | 18°C (65°F) | 108 mm (4.3 inches) | 75% | very high |
| July Weather | 21°C (70°F) | 103 mm (4.1 inches) | 74% | very high |
| August Weather | 19°C (67°F) | 118 mm (4.6 inches) | 73% | very high |
| September Weather | 15°C (60°F) | 90 mm (3.5 inches) | 78% | high |
| October Weather | 8°C (46°F) | 99 mm (3.9 inches) | 84% | moderate |
| November Weather | 0°C (32°F) | 51 mm (2.0 inches) | 89% | moderate |
| December Weather | -5°C (23°F) | 55 mm (2.2 inches) | 87% | low |