Madison, WI Frost Dates
The last spring frost in Madison usually comes around May 1 and the first fall frost around October 10.
| Spring (last) | Fall (first) | |
|---|---|---|
| Frost, 32°F | May 1 | October 10 |
| Hard freeze, 28°F | April 20 | October 22 |
Growing season: about 160 days.
Frequently asked questions
When is the last frost in Madison, WI?
The median date of the last spring frost (32°F) is May 1. In half of years the last frost comes earlier and in half it comes later, so waiting a week or two past May 1 lowers the risk for tender plants.
When is the first frost in Madison?
The median date of the first fall frost (32°F) is October 10, and a hard freeze (28°F) usually follows around October 22.
How long is the growing season in Madison?
About 160 days between the median last spring frost and first fall frost.
NOAA NCEI U.S. Climate Normals 1991-2020, station USW00014837. Median (50% probability) dates. Low spots and valleys can frost later in spring and earlier in fall than the station.