Frost dates for 45246 — Cincinnati, OH
How Cincinnati compares
- In 8 years out of 10, the last spring frost in Cincinnati falls between April 6 and May 10, a 34-day window. The first fall frost falls between October 5 and October 29.
- The median last frost is 2 days earlier than the Ohio median of Apr 24.
- Its 179-day growing season is longer than 44% of the 1,063 Ohio places with a regular frost season (state median 180 days).
- The last frost is typical for zone 6b, where the median is Apr 22.
- The weather station records an average of 115 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 6 |
| 50% (median) | April 22 |
| 10% (safe for tender plants) | May 10 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 5 |
| 50% (median) | October 18 |
| 90% (late) | October 29 |
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 45246 — Cincinnati, OH — last frost Apr 22, first frost Oct 18, zone 6b. whenisthelastfrost.com
When to plant vegetables in Cincinnati, OH
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 28 – Feb 11 | Mar 25 – Apr 8 | — | — |
| Peppers | Feb 11 – Feb 25 | May 6 – May 20 | — | — |
| Eggplant | Feb 11 – Feb 25 | May 6 – May 20 | — | — |
| Tomatoes | Feb 25 – Mar 11 | Apr 29 – May 13 | — | — |
| Lettuce | Feb 25 – Mar 11 | Apr 1 – Apr 15 | Mar 25 – Apr 29 | Aug 23 – Sep 20 |
| Kale | Feb 25 – Mar 11 | Mar 25 – Apr 8 | Mar 25 – Apr 8 | Aug 9 – Aug 30 |
| Broccoli | Feb 25 – Mar 11 | Apr 8 – Apr 22 | — | Jul 12 – Aug 2 |
| Cabbage | Feb 25 – Mar 11 | Apr 1 – Apr 15 | — | Jul 12 – Aug 2 |
| Cauliflower | Feb 25 – Mar 11 | Apr 8 – Apr 22 | — | Jul 12 – Aug 2 |
| Okra | Mar 11 – Mar 25 | May 13 – May 27 | May 13 – May 27 | — |
| Basil | Mar 11 – Mar 25 | Apr 29 – May 13 | — | — |
| Peas | — | — | Mar 11 – Apr 1 | Jul 26 – Aug 16 |
| Spinach | — | — | Mar 11 – Apr 1 | Aug 23 – Sep 13 |
| Radishes | — | — | Mar 18 – Apr 29 | Sep 6 – Sep 27 |
| Cucumbers | Mar 25 – Apr 1 | May 6 – May 13 | Apr 29 – May 13 | Aug 2 – Aug 16 |
| Zucchini & Summer Squash | Mar 25 – Apr 1 | — | Apr 29 – May 13 | Aug 9 – Aug 23 |
| Winter Squash & Pumpkins | Mar 25 – Apr 1 | — | Apr 29 – May 13 | — |
| Melons & Watermelon | Mar 25 – Apr 1 | May 6 – May 20 | — | — |
| Carrots | — | — | Apr 1 – Apr 29 | Jul 26 – Aug 9 |
| Beets | — | — | Apr 1 – Apr 29 | Aug 9 – Aug 23 |
| Potatoes | — | — | Apr 1 – Apr 22 | — |
| Swiss Chard | — | — | Apr 8 – May 6 | Aug 9 – Aug 23 |
| Cilantro | — | — | Apr 8 – Apr 29 | Aug 23 – Sep 13 |
| Green Beans | — | — | Apr 29 – May 20 | Aug 2 – Aug 16 |
| Sweet Corn | — | — | Apr 29 – May 13 | — |
| Sweet Potatoes | — | May 6 – May 27 | — | — |
| Garlic | — | — | — | Oct 4 – Nov 8 |
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 Hamilton Butler Co Rgnl Ap, OH weather station, 10 km away (elevation 633 ft (193 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
- West Chester Apr 22 · Oct 18
- Fairfield Apr 22 · Oct 18
- Mason Apr 23 · Oct 18
- Ross Apr 19 · Oct 22
- Hamilton Apr 22 · Oct 18
- Miamiville Apr 23 · Oct 18
- Camp Dennison Apr 23 · Oct 18
- Overpeck Apr 22 · Oct 18
Frequently asked questions
When is the last frost in Cincinnati, OH?
The median last spring frost in Cincinnati, OH is April 22. There is still about a 10% chance of frost after May 10, 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 18, with about a 10% chance of frost before October 5.
How long is the growing season in Cincinnati, OH?
About 179 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.