Flint, MI Frost Dates
The last spring frost in Flint usually comes around May 6 and the first fall frost around October 10.
| Spring (last) | Fall (first) | |
|---|---|---|
| Frost, 32°F | May 6 | October 10 |
| Hard freeze, 28°F | April 26 | October 23 |
Growing season: about 155 days.
Frequently asked questions
When is the last frost in Flint, MI?
The median date of the last spring frost (32°F) is May 6. In half of years the last frost comes earlier and in half it comes later, so waiting a week or two past May 6 lowers the risk for tender plants.
When is the first frost in Flint?
The median date of the first fall frost (32°F) is October 10, and a hard freeze (28°F) usually follows around October 23.
How long is the growing season in Flint?
About 155 days between the median last spring frost and first fall frost.
NOAA NCEI U.S. Climate Normals 1991-2020, station USW00014826. Median (50% probability) dates. Low spots and valleys can frost later in spring and earlier in fall than the station.