Michigan climate

World Climates covers 3 places in Michigan. By annual mean temperature, the warmest is Lansing (9 °C48 °F) and the coolest is Ann Arbor (9 °C48 °F). The wettest is Grand Rapids with 967 mm38 in of precipitation per year, the driest Ann Arbor with 878 mm35 in.

The most common climate types (Köppen classification computed from these averages) are hot-summer humid continental (Dfa, 3 places).

The highest monthly average high is in Ann Arbor (28 °C83 °F in July); the lowest monthly average low is in Ann Arbor (−9 °C16 °F in January).

Across the places in Michigan, the months that most often rank as the most comfortable are June, July and August (3, 3 and 3 of 3 places respectively).

Temperature and rainfall across Michigan

Annual mean temperatures in Michigan range from 9 °C48 °F to 9 °C48 °F. The typical place (the median of all 3) has a year average of 9 °C48 °F. Annual precipitation ranges from 878 mm35 in to 967 mm38 in. The median place receives about 885 mm35 in in an average year.

In 3 places of 3, the coldest month has an average low below 0 °C (32 °F). In 0 places, the warmest month has an average high above 30 °C (86 °F). No place here gets less than 250 mm (10 in) of precipitation a year. None gets more than 2,000 mm (79 in) a year.

Averaged over all 3 places, July is the warmest month, with a mean of 22 °C72 °F. January is the coldest, with −5 °C23 °F. The wettest month on average is May (105 mm4.1 in). The driest is January (56 mm2.2 in). Single places can differ a lot from this average, so check the page of each city.

The table below lists the places sorted by population. The largest ones covered here are Grand Rapids, Ann Arbor and Lansing. Each city page has a chart and a table for every month. It also shows the best time to visit and what to pack. The figures are 25-year averages for 2001–2025 from NASA POWER. They describe grid cells of roughly 50–70 km, not single weather stations.

Climate of each place in Michigan

Grand Rapids has a hot-summer humid continental climate (Köppen Dfa). Its year average is 9 °C48 °F. The warmest month is July, with an average high of 27 °C81 °F. The coldest is January, with an average low of −8 °C17 °F. About 967 mm38 in of precipitation falls in a year. October is the wettest month and February the driest. By our comfort score, the best months to visit are June–September.

Ann Arbor has a hot-summer humid continental climate (Köppen Dfa). Its year average is 9 °C48 °F. The warmest month is July, with an average high of 28 °C83 °F. The coldest is January, with an average low of −9 °C16 °F. About 878 mm35 in of precipitation falls in a year. May is the wettest month and January the driest. By our comfort score, the best months to visit are June–September.

Lansing has a hot-summer humid continental climate (Köppen Dfa). Its year average is 9 °C48 °F. The warmest month is July, with an average high of 28 °C83 °F. The coldest is January, with an average low of −9 °C16 °F. About 885 mm35 in of precipitation falls in a year. May is the wettest month and January the driest. By our comfort score, the best months to visit are June–September.

Frequently asked questions

Which is the warmest place in Michigan?

By annual mean temperature, the warmest place in Michigan is Lansing at 9 °C48 °F. The coolest is Ann Arbor at 9 °C48 °F.

Where does it rain the most in Michigan?

Grand Rapids gets the most precipitation, 967 mm38 in in an average year. The driest place is Ann Arbor with 878 mm35 in.

How many places in Michigan does this site cover?

World Climates has climate data for 3 places in Michigan. Each one has a page with monthly averages for temperature, rainfall, humidity and daylight.

When is the best time to visit Michigan?

It depends on the place. Across Michigan, the months that most often rank as the most comfortable are June, July and August. Check the page of each city for its own best months.