Rochester, MN Frost Dates
The last spring frost in Rochester usually comes around April 30 and the first fall frost around October 6.
| Spring (last) | Fall (first) | |
|---|---|---|
| Frost, 32°F | April 30 | October 6 |
| Hard freeze, 28°F | April 18 | October 17 |
Growing season: about 159 days.
Frequently asked questions
When is the last frost in Rochester, MN?
The median date of the last spring frost (32°F) is April 30. In half of years the last frost comes earlier and in half it comes later, so waiting a week or two past April 30 lowers the risk for tender plants.
When is the first frost in Rochester?
The median date of the first fall frost (32°F) is October 6, and a hard freeze (28°F) usually follows around October 17.
How long is the growing season in Rochester?
About 159 days between the median last spring frost and first fall frost.
NOAA NCEI U.S. Climate Normals 1991-2020, station USW00014925. Median (50% probability) dates. Low spots and valleys can frost later in spring and earlier in fall than the station.