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Michigan weather in August 2025
Expect daytime maximum temperatures of 81°F in Michigan, USA in August based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 3.2 inches of rainfall in the month.
- 81°F max day temperature
81 - 8 hours of sunshine per day
- 9 days with some rainfall
9 - 63°F min night temperature
63 - 14 hours of daylight per day
14 - Moderate heat & humidity
M - 3.2 inches of monthly rainfall
3.2 - 8 (Very High) UV index
8 - 73°F sea temperature
73
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Recommended for Michigan
The August weather guide for Michigan (Detroit) 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.
Top Michigan destinations
Below are average maximum temperatures at popular countries, regions and places in Michigan in August. Select a holiday destination to see more weather parameters.
All Michigan destinations
- Alpena
- Detroit
- Escanaba
- Grand Marais
- Holland
- Iron Mountain
- Isle Royale
- Lansing
- Ludington
- Mackinac Island
- Muskegon
- Saginaw
- Sault Ste. Marie
- Traverse City
Metric (°C) | Imperial (°F)
More about the USA
How hot is it in Michigan in August?
Daytime temperatures usually reach 81°F in Detroit, Michigan in August with moderate heat and humidity, falling to 63°F at night.
How sunny is it in Michigan in August?
There are normally 8 hours of bright sunshine each day in Detroit, Michigan in August - that's 61% of daylight hours.
How warm is the sea around Michigan in August?
The average sea temperature around Detroit, Michigan in August is 73°F.
Does it rain in Michigan in August?
There are usually 9 days with some rain in Detroit, Michigan in August and the average monthly rainfall is 3.2 inches.
Michigan August sunrise & sunset times
Browse the sunrise and sunset times for Michigan in August 2025. Select a month to view Michigan sunrise and sunset times for the next 12 months. The Michigan sunrise and sunset times shown below are for Detroit.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Friday, 1st August 2025 | 05:25 | 19:51 |
| Saturday, 16th August 2025 | 05:41 | 19:31 |
| Sunday, 31st August 2025 | 05:57 | 19:07 |
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