Last frost date in Hamilton, Ohio
April 22
Average last frost in spring. In an early year (1 in 10) it's over by April 6; in a late year (1 in 10) it comes after May 10.
October 18
Average first frost in fall. 1 year in 10 it comes by October 5.
Source: NOAA U.S. Climate Normals 1991–2020, station Hamilton Butler Co Rgnl AP (USW00053855), 3 miles from Hamilton, elevation 634 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
This station is also the nearest one for Fairfield, Forest Park, Mason, Sharonville, Springdale and Trenton, so their frost dates are the same as Hamilton's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 6 | Apr 22 | May 10 |
| First frost in fall | Oct 5 | Oct 18 | Oct 29 |
Frost-free days in an average year: 178
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 2 | Oct 7 |
| Frost (32°F) | Every year | Apr 22 | Oct 18 |
| Hard freeze (28°F) | Every year | Apr 8 | Oct 27 |
Nights at 32°F or colder in an average year: 115
What to plant now in Hamilton
- Spring planting calendar for an average last frost around April 20 Hamilton: April 22
- Fall planting calendar for an average first frost around October 20 Hamilton: October 18
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
- Oxford 12 mi · last frost Apr 19
- Middletown 13 mi · last frost Apr 24
- Blue Ash 14 mi · last frost Apr 23
- Harrison 15 mi · last frost Apr 16
- Cincinnati 18 mi · last frost Apr 16
Updated