Detroit Temperatures: Averages by Month





The numbers here tell you how hot and cold the weather usually is in Detroit, Michigan during each month of the year.

The average high and low temperatures are listed below monthly and annually for the city, in both degrees Fahrenheit and Celsius.

Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.

To find out how often it rises over 70, 80 or 90 °F each month in Detroit, scroll down farther. There are also monthly and yearly counts of days with cold weather.

The first set of high and low temperatures are averages for 2010 to 2019. Everything else here is based on 1991 to 2020 weather.

10-year temperature averages for Detroit, 2010 to 2019
High °F Low °F   High °C Low °C
32 18 January 0 -8
35 20 February 2 -7
46 29 March 8 -2
59 39 April 15 4
73 52 May 23 11
80 61 June 27 16
85 66 July 30 19
83 64 August 28 18
76 57 September 24 14
63 45 October 17 7
49 33 November 9 1
38 26 December 4 -3
60 43 Year 16 6
30-year temperature averages for Detroit, 1991 to 2020
High °F Low °F   High °C Low °C
32 19 January 0 -7
35 21 February 2 -6
46 29 March 8 -2
59 39 April 15 4
70 50 May 21 10
80 60 June 27 16
84 64 July 29 18
81 63 August 27 17
74 56 September 24 13
62 44 October 17 7
49 34 November 9 1
37 25 December 3 -4
59 42 Year 15 6

Days of Hot Weather in Detroit

Detroit averages 13 days in a summer when temperatures rise into the 90s Fahrenheit. Just two days per decade on average heat up to 100 °F (38 °C) or more.

Days per month in Detroit of at least 70, 80 or 90 °F
  70 °F
21 °C
80 °F
27 °C
90 °F
32 °C
January 0 0 0
February 0 0 0
March 1 0 0
April 6 1 0
May 16 7 1
June 27 16 3
July 31 24 5
August 30 21 3
September 22 9 1
October 7 1 0
November 1 0 0
December 0 0 0
Year 141 79 13

How Often Detroit Has Cold Temperatures

Most winter nights have freezing temperatures in Detroit and normally 16 nights a year drop to 10 °F or below. The city averages four days annually when the thermometer plunges to 0 °F (-18 °C) or lower.

From November to April, it can remain below freezing all day long. Detroit typically has 42 frosty days a year.

Days per month on average in Detroit when the minimum temperature drops to 32, 20, or 10 °F or below
  10 °F
-12 °C
20 °F
-8 °C
32 °F
0 °C
January 7 16 27
February 5 13 25
March 1 6 21
April 0 0 6
May 0 0 0
June 0 0 0
July 0 0 0
August 0 0 0
September 0 0 0
October 0 0 2
November 0 2 14
December 2 9 24
Year 16 45 120
References

Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Month and Year, Version 1.0. NOAA National Centers for Environmental Information.

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

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