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.
| 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 |
| 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.
| 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.
| 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.