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Iron Mountain weather in September 2025
Expect 20°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Iron Mountain in September. Check more long-term weather averages for Iron Mountain in September before you book your next holiday to Michigan in 2025/2026.
- 2020°C max day temperature
- 6 hours of sunshine per day
- 1313 days with some rainfall
- 77°C min night temperature
- 1212 hours of daylight per day
- 0No heat & humidity
- 9494 mm of monthly rainfall
- 55 (Moderate) UV index
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Iron Mountain by month
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Recommended for Michigan
The September weather guide for Michigan (Iron Mountain) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in Iron Mountain in September?
Daytime temperatures usually reach 20°C in Iron Mountain in September, falling to 7°C at night.
How sunny is it in Iron Mountain in September?
There are normally 6 hours of bright sunshine each day in Iron Mountain in September - that's 51% of daylight hours.
Does it rain in Iron Mountain in September?
There are usually 13 days with some rain in Iron Mountain in September and the average monthly rainfall is 94mm.
Iron Mountain September sunrise & sunset times
Browse the sunrise and sunset times for Iron Mountain in September 2025. Select a month to view Iron Mountain sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 05:14 | 18:30 |
Monday, 15th September 2025 | 05:31 | 18:03 |
Tuesday, 30th September 2025 | 05:50 | 17:34 |
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