Detroit Average Rainfall by Month

This page shows the average precipitation (including snowfall) in each month of the year in Detroit, Michigan. It is based on NOAA data for the years 1991–2020.

Average temperature by month

What's the Rainiest Month in Detroit?

In Detroit, May has the greatest precipitation of any month. On average, Detroit gets 3.7 inches of precipitation in May.

However, January is the month with the greatest chance of precipitation. 43.1% of days in January will have at least some rain or snow.

What's the Driest Month in Detroit?

In Detroit, February has the least precipitation of any month. On average, Detroit gets 2.08 inches of precipitation in February.

August is the month with the lowest chance of precipitation. 31.4% of days in August will have measurable rain.

Month	Precipitation	% Chance
January	2.23 in	43.1
February	2.08 in	38.7
March	2.43 in	35.8
April	3.26 in	41.8
May	3.71 in	41.5
June	3.26 in	35.8
July	3.51 in	34.0
August	3.25 in	31.4
September	3.22 in	31.7
October	2.52 in	34.2
November	2.57 in	36.7
December	2.25 in	42.2
Year	34.29 in	37.2

Weather Station Details

Years	Station	Coordinates
1959–2024	Detroit Metro Airport	location
1948–1958	Detroit City Airport	location
1896–1947	Mt Clemens Army National Guard Base	location