Average Rainfall for Michigan in August





The tables below give monthly averages for rainfall during August at cities, communities and other locations around Michigan.

Each place has a total for the amount of precipitation it usually receives this month. There is also a count of the number of days with wet weather, when precipitation amounts to 0.01 inches (0.25 millimetres) or more.

The rainfall totals are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.

You can jump to a separate table for each region of the state: The Thumb & Southeast Michigan, West & Mid-Michigan, Northern Michigan and Upper Peninsula.

The Thumb & Southeast Michigan

Average monthly precipitation in August
Days Place Inches Milli­metres
10 Adrian 3.6 92
11 Ann Arbor 3.5 89
8 Bay City 3.8 98
10 Dearborn 3.2 82
10 Detroit 3.3 83
10 Flint 3.2 80
10 Harbor Beach 3.3 84
11 Midland 3.2 81
10 Port Huron 3.1 80
10 Saginaw 3.5 89

West & Mid-Michigan

August averages for total rainfall
Days Place Inches Milli­metres
10 Battle Creek 3.5 89
11 Benton Harbor 3.6 92
10 Grand Rapids 3.6 90
11 Holland 3.1 78
10 Jackson 3.8 97
10 Lansing 3.5 88
9 Muskegon 3.1 79
10 Niles 4.4 112

Northern Michigan

Average amount of rain in August
Days Place Inches Milli­metres
10 Alpena 3.1 78
12 Cadillac 3.5 89
10 Cheboygan 3.3 84
9 East Tawas 3.0 75
9 Frankfort 3.2 81
10 Gaylord 3.4 86
10 Harrisville 3.2 81
9 Houghton Lake 3.0 77
11 Petoskey 3.3 83
10 Traverse City  3.0 76

Upper Peninsula

Precipitation totals for August
Days Place Inches Milli­metres
11 De Tour Village 3.4 85
10 Escanaba 3.0 76
11 Iron Mountain 2.4 62
12 Ironwood 3.8 96
11 Marquette 2.3 59
10 Munising 3.2 80
11 Sault Ste Marie 3.2 81
11 Whitefish Point 3.1 80
Reference

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Michigan Precipitation
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