Madison Temperatures: Averages by Month
The numbers here tell you how hot and cold the weather usually is in Madison, 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 60, 70 or 80 °F each month in Madison, 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 | |
|---|---|---|---|---|
| 27 | 12 | January | -3 | -11 |
| 30 | 14 | February | -1 | -10 |
| 44 | 25 | March | 7 | -4 |
| 57 | 36 | April | 14 | 2 |
| 70 | 48 | May | 21 | 9 |
| 79 | 58 | June | 26 | 15 |
| 84 | 63 | July | 29 | 17 |
| 81 | 60 | August | 27 | 16 |
| 74 | 52 | September | 23 | 11 |
| 61 | 41 | October | 16 | 5 |
| 45 | 28 | November | 7 | -2 |
| 33 | 20 | December | 1 | -7 |
| 57 | 38 | Year | 14 | 3 |
| High °F | Low °F | High °C | Low °C | |
|---|---|---|---|---|
| 27 | 12 | January | -3 | -11 |
| 31 | 15 | February | 0 | -10 |
| 44 | 25 | March | 6 | -4 |
| 57 | 36 | April | 14 | 2 |
| 69 | 47 | May | 21 | 8 |
| 79 | 57 | June | 26 | 14 |
| 82 | 62 | July | 28 | 16 |
| 80 | 60 | August | 27 | 15 |
| 73 | 51 | September | 23 | 11 |
| 60 | 40 | October | 15 | 4 |
| 45 | 29 | November | 7 | -2 |
| 32 | 18 | December | 0 | -8 |
| 57 | 38 | Year | 14 | 3 |
Days of Hot Weather in Madison
A hot day at Madison means highs in the 80s Fahrenheit. Just nine days a year on average reach into the 90s (above 32 °C). Twice a decade on average, the thermometer makes it to 100 degrees F (38 °C).
The 90-degree weather can show up during any of the summer months, while 80-degree temperatures appear periodically from April to October.
| 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 | 5 | 1 | 0 |
| May | 15 | 5 | 0 |
| June | 26 | 15 | 2 |
| July | 30 | 21 | 4 |
| August | 30 | 18 | 2 |
| September | 20 | 8 | 1 |
| October | 6 | 1 | 0 |
| November | 1 | 0 | 0 |
| December | 0 | 0 | 0 |
| Year | 134 | 69 | 9 |
How Often Madison Has Cold Temperatures
Negative temperatures are not uncommon in Madison during winter. The city averages 16 nights a year that drop to 0 °F or lower.
Most winter days never warm up to above freezing. Days with frosty weather begin to show up in late fall and can linger until early spring. In total, Madison averages 59 days a year with a high of 32 °F (0 °C) or less.
| 0 °F -18 °C |
10 °F -12 °C |
20 °F -8 °C | |
|---|---|---|---|
| January | 7 | 14 | 21 |
| February | 5 | 10 | 17 |
| March | 1 | 3 | 10 |
| April | 0 | 0 | 1 |
| May | 0 | 0 | 0 |
| June | 0 | 0 | 0 |
| July | 0 | 0 | 0 |
| August | 0 | 0 | 0 |
| September | 0 | 0 | 0 |
| October | 0 | 0 | 0 |
| November | 0 | 1 | 6 |
| December | 3 | 8 | 17 |
| Year | 16 | 36 | 71 |
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.