Frost dates for 45225 — Cincinnati, OH
How Cincinnati compares
- In 8 years out of 10, the last spring frost in Cincinnati falls between April 2 and May 5, a 33-day window. The first fall frost falls between October 11 and November 7.
- The median last frost is 7 days earlier than the Ohio median of Apr 24.
- Its 192-day growing season is longer than 87% of the 1,063 Ohio places with a regular frost season (state median 180 days).
- The last frost is 5 days earlier than the zone 6b median of Apr 22. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 6b chart.
- The weather station records an average of 106 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 2 |
| 50% (median) | April 17 |
| 10% (safe for tender plants) | May 5 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 11 |
| 50% (median) | October 26 |
| 90% (late) | November 7 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Cincinnati, OH
Frost dates for 45225 — Cincinnati, OH — last frost Apr 17, first frost Oct 26, zone 6b. whenisthelastfrost.com
When to plant vegetables in Cincinnati, OH
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 23 – Feb 6 | Mar 20 – Apr 3 | — | — |
| Peppers | Feb 6 – Feb 20 | May 1 – May 15 | — | — |
| Eggplant | Feb 6 – Feb 20 | May 1 – May 15 | — | — |
| Tomatoes | Feb 20 – Mar 6 | Apr 24 – May 8 | — | — |
| Lettuce | Feb 20 – Mar 6 | Mar 27 – Apr 10 | Mar 20 – Apr 24 | Aug 31 – Sep 28 |
| Kale | Feb 20 – Mar 6 | Mar 20 – Apr 3 | Mar 20 – Apr 3 | Aug 17 – Sep 7 |
| Broccoli | Feb 20 – Mar 6 | Apr 3 – Apr 17 | — | Jul 20 – Aug 10 |
| Cabbage | Feb 20 – Mar 6 | Mar 27 – Apr 10 | — | Jul 20 – Aug 10 |
| Cauliflower | Feb 20 – Mar 6 | Apr 3 – Apr 17 | — | Jul 20 – Aug 10 |
| Okra | Mar 6 – Mar 20 | May 8 – May 22 | May 8 – May 22 | — |
| Basil | Mar 6 – Mar 20 | Apr 24 – May 8 | — | — |
| Peas | — | — | Mar 6 – Mar 27 | Aug 3 – Aug 24 |
| Spinach | — | — | Mar 6 – Mar 27 | Aug 31 – Sep 21 |
| Radishes | — | — | Mar 13 – Apr 24 | Sep 14 – Oct 5 |
| Cucumbers | Mar 20 – Mar 27 | May 1 – May 8 | Apr 24 – May 8 | Aug 10 – Aug 24 |
| Zucchini & Summer Squash | Mar 20 – Mar 27 | — | Apr 24 – May 8 | Aug 17 – Aug 31 |
| Winter Squash & Pumpkins | Mar 20 – Mar 27 | — | Apr 24 – May 8 | — |
| Melons & Watermelon | Mar 20 – Mar 27 | May 1 – May 15 | — | — |
| Carrots | — | — | Mar 27 – Apr 24 | Aug 3 – Aug 17 |
| Beets | — | — | Mar 27 – Apr 24 | Aug 17 – Aug 31 |
| Potatoes | — | — | Mar 27 – Apr 17 | — |
| Swiss Chard | — | — | Apr 3 – May 1 | Aug 17 – Aug 31 |
| Cilantro | — | — | Apr 3 – Apr 24 | Aug 31 – Sep 21 |
| Green Beans | — | — | Apr 24 – May 15 | Aug 10 – Aug 24 |
| Sweet Corn | — | — | Apr 24 – May 8 | — |
| Sweet Potatoes | — | May 1 – May 22 | — | — |
| Garlic | — | — | — | Oct 12 – Nov 16 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Cheviot, OH weather station, 6 km away (elevation 892 ft (272 m)).
ZIP codes in Cincinnati: 45201 45202 45203 45204 45205 45206 45207 45208 45209 45211 45212 45213 45214 45215 45216 45217 45218 45219 45220 45221 45222 45223 45224 45225 45226 45227 45229 45230 45231 45232 45233 45234 45235 45236 45237 45238 45239 45240 45241 45242 45243 45244 45245 45246 45247 45248 45249 45250 45251 45252 45253 45254 45255 45258 45262 45263 45264 45267 45268 45269 …
Frost dates near Cincinnati
- Mount Saint Joseph Apr 13 · Oct 31
- Addyston Apr 13 · Oct 31
- North Bend Apr 16 · Oct 28
- Miamitown Apr 16 · Oct 28
- Cleves Apr 16 · Oct 28
- Hooven Apr 16 · Oct 28
- Ross Apr 19 · Oct 22
- Terrace Park Apr 23 · Oct 18
Frequently asked questions
When is the last frost in Cincinnati, OH?
The median last spring frost in Cincinnati, OH is April 17. There is still about a 10% chance of frost after May 5, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Cincinnati, OH?
The median first fall frost is October 26, with about a 10% chance of frost before October 11.
How long is the growing season in Cincinnati, OH?
About 192 days between the median last spring frost and first fall frost.
What planting zone is Cincinnati, OH?
Cincinnati, OH is in USDA hardiness zone 6b.