Last frost date in Dayton, Ohio
April 18
Average last frost in spring. In an early year (1 in 10) it's over by April 3; in a late year (1 in 10) it comes after May 5.
October 25
Average first frost in fall. 1 year in 10 it comes by October 13.
Source: NOAA U.S. Climate Normals 1991–2020, station Dayton Mcd (USC00332067), 1.5 miles from Dayton, elevation 720 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
This station is also the nearest one for Beavercreek, Kettering, Riverside and Trotwood, so their frost dates are the same as Dayton's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 3 | Apr 18 | May 5 |
| First frost in fall | Oct 13 | Oct 25 | Nov 7 |
Frost-free days in an average year: 189
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 30 | Oct 16 |
| Frost (32°F) | Every year | Apr 18 | Oct 25 |
| Hard freeze (28°F) | Every year | Apr 6 | Nov 4 |
Nights at 32°F or colder in an average year: 107
What to plant now in Dayton
- Spring planting calendar for an average last frost around April 20 Dayton: April 18
- Fall planting calendar for an average first frost around October 20 Dayton: October 25
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 Ohio
- Huber Heights 7 mi · last frost Apr 16
- Fairborn 10 mi · last frost Apr 24
- Centerville 11 mi · last frost Apr 17
- Xenia 15 mi · last frost Apr 18
- Troy 18 mi · last frost Apr 18