Last frost date in Owosso, Michigan
May 1
Average last frost in spring. In an early year (1 in 10) it's over by April 17; in a late year (1 in 10) it comes after May 17.
October 15
Average first frost in fall. 1 year in 10 it comes by October 1.
Source: NOAA U.S. Climate Normals 1991–2020, station Owosso Wwtp (USC00206300), 1.5 miles from Owosso, elevation 730 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 17 | May 1 | May 17 |
| First frost in fall | Oct 1 | Oct 15 | Oct 30 |
Frost-free days in an average year: 164
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 11 | Oct 4 |
| Frost (32°F) | Every year | May 1 | Oct 15 |
| Hard freeze (28°F) | Every year | Apr 20 | Oct 28 |
Nights at 32°F or colder in an average year: 149
What to plant now in Owosso
- Spring planting calendar for an average last frost around April 30 Owosso: May 1
- Fall planting calendar for an average first frost around October 10 Owosso: October 15
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5. How we match the table.
Nearby in Michigan
- East Lansing 23 mi · last frost Apr 28
- Flint 25 mi · last frost May 3
- Fenton 27 mi · last frost May 3
- Lansing 28 mi · last frost May 1
- Burton 28 mi · last frost May 8
Updated