Iron Mountain

What is the climate like in Iron Mountain?

The best time to visit Iron Mountain is typically September, the year's most comfortable month (6.6/10). Iron Mountain is warmest in July, when daily highs average 81°F (27°C), and coolest in February, when lows fall to about 11°F (-12°C). The wettest month is typically August and the driest is January; the year sees roughly 35 in (900 mm) of precipitation.

• Best time to visitSeptember — the year's comfort peak (6.6/10)
• Warmest monthJuly — average high 81°F (27°C)
• Coolest monthFebruary — average low 11°F (-12°C)
• Wettest monthAugust (4.3 in (108 mm))
• Driest monthJanuary (1.4 in (36 mm))
• Annual precipitation35 in (900 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromIron Mtn-kingsford Wwtp, 4 km away (1899-2026)