Milwaukee WI Average Temperatures by Month

The numbers here tell you how hot and cold the weather usually is in Milwaukee, Wisconsin 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 Milwaukee, 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 Milwaukee, 2010 to 2019
High °F	Low °F		High °C	Low °C
30	16	January	-1	-9
33	18	February	0	-8
43	29	March	6	-2
54	37	April	12	3
67	48	May	19	9
76	58	June	24	14
82	65	July	28	19
80	64	August	27	18
73	57	September	23	14
61	45	October	16	7
46	32	November	8	0
36	24	December	2	-5
57	41	Year	14	5

30-year temperature averages for Milwaukee, 1991 to 2020
High °F	Low °F		High °C	Low °C
31	17	January	-1	-8
34	20	February	1	-7
44	29	March	7	-2
55	38	April	13	3
67	48	May	19	9
77	58	June	25	15
82	65	July	28	18
80	64	August	27	18
74	56	September	23	14
61	45	October	16	7
48	33	November	9	1
36	23	December	2	-5
57	41	Year	14	5

Days of Hot Weather in Milwaukee

A hot day at Milwaukee means highs in the 80s Fahrenheit. Nine days a year on average reach into the 90s (above 32 °C). Temperatures of 100 degrees F (38 °C) or more are not normal here.

Days per month in Milwaukee 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	3	1	0
May	11	5	0
June	22	12	2
July	29	18	4
August	29	15	3
September	19	7	1
October	6	1	0
November	1	0	0
December	0	0	0
Year	121	59	9

How Often Milwaukee Has Cold Temperatures

Milwaukee averages seven nights a year when the temperature drops to 0 °F (-18 °C) or less.

About half of winter days here stay below freezing for the entire day. From late fall to early spring, the city typically has 50 frosty days.

Days per month on average in Milwaukee when the minimum temperature drops to 10, 20, or 32 °F or below
	10 °F -12 °C	20 °F -8 °C	32 °F 0 °C
January	9	18	28
February	6	14	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	3	15
December	5	12	25
Year	22	52	123

Milwaukee Temperatures: Averages by Month

Days of Hot Weather in Milwaukee

How Often Milwaukee Has Cold Temperatures

References

More on Weather in Wisconsin