Michigan weather in August
August is one of the best months to visit Michigan: highs of 27°C (81°F) and about 82 mm (3.2 in) of rain on average. Nights average 17°C (62°F) and cloud cover 49% (NASA POWER, 2001–2025 averages). It is the 4th wettest month of the year and the 2nd warmest. Compared with July, it is cooler and about as wet; September brings highs of 23°C (74°F) and 74 mm (2.9 in) of rain.
Figures are long-term averages for Detroit, the largest city in Michigan. See below for other places.
Is August a good time to visit Michigan?
best month Weather score 77/100.
Yes. August is one of the best months for weather in Michigan.
Does it rain a lot in Michigan in August?
Some rain is normal: about 82 mm (3.2 in) falls in an average August. It is the 4th wettest month of the year.
How warm is Michigan in August?
Days average 27°C (81°F) and nights 17°C (62°F).
Michigan weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | -1°C (30°F) | -8°C (17°F) | 52 mm | 77% | least pleasant |
| February | 0°C (32°F) | -8°C (17°F) | 52 mm | 72% | least pleasant |
| March | 6°C (43°F) | -4°C (26°F) | 56 mm | 68% | least pleasant |
| April | 14°C (56°F) | 2°C (35°F) | 77 mm | 64% | fair |
| May | 20°C (68°F) | 8°C (47°F) | 97 mm | 64% | best |
| June | 25°C (77°F) | 14°C (57°F) | 84 mm | 56% | best |
| July | 28°C (82°F) | 17°C (63°F) | 85 mm | 50% | best |
| August | 27°C (81°F) | 17°C (62°F) | 82 mm | 49% | best |
| September | 23°C (74°F) | 13°C (55°F) | 74 mm | 49% | best |
| October | 16°C (60°F) | 6°C (43°F) | 72 mm | 63% | fair |
| November | 8°C (47°F) | 0°C (32°F) | 62 mm | 69% | least pleasant |
| December | 2°C (35°F) | -5°C (24°F) | 55 mm | 79% | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
Weather across Michigan in August
Weather can differ a lot within Michigan: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Detroit | 27°C (81°F) | 17°C (62°F) | 82 mm | best |
| Grand Rapids | 27°C (80°F) | 16°C (61°F) | 87 mm | best |
| Warren | 27°C (81°F) | 17°C (62°F) | 82 mm | best |
| Sterling Heights | 27°C (81°F) | 17°C (62°F) | 82 mm | best |
| Ann Arbor | 28°C (82°F) | 16°C (61°F) | 83 mm | best |
| Lansing | 28°C (82°F) | 16°C (60°F) | 86 mm | best |
| Clinton Township | 27°C (81°F) | 17°C (62°F) | 82 mm | best |
| Flint | 27°C (80°F) | 16°C (60°F) | 85 mm | best |
| Dearborn | 27°C (81°F) | 17°C (62°F) | 82 mm | best |
| Livonia | 27°C (81°F) | 17°C (62°F) | 82 mm | best |
| Canton | 28°C (82°F) | 16°C (61°F) | 83 mm | best |
| Troy | 27°C (81°F) | 17°C (62°F) | 82 mm | best |