Frost dates for 44481 — Warren, OH
Last spring frostMay 8median date
First fall frostOct 12median date
Growing season157 daysfrost-free
Hardiness zone6aZone 6a
How Warren compares
- In 8 years out of 10, the last spring frost in Warren falls between April 23 and May 25, a 32-day window. The first fall frost falls between September 30 and October 26.
- The median last frost is 14 days later than the Ohio median of Apr 24.
- Its 157-day growing season is among the shortest of the 1,063 Ohio places with a regular frost season.
- The last frost is 9 days later than the zone 6a median of Apr 29. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 6a chart.
- The weather station records an average of 147 nights a year at or below 32°F.
- Warren shares its weather station with Youngstown, OH, 19 km away, so the two have the same frost dates.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 23 |
| 50% (median) | May 8 |
| 10% (safe for tender plants) | May 25 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 30 |
| 50% (median) | October 12 |
| 90% (late) | October 26 |
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 Warren, OH
Frost dates for 44481 — Warren, OH — last frost May 8, first frost Oct 12, zone 6a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Feb 13 to Feb 27Transplant outside: Apr 10 to Apr 24
Start indoors: Feb 27 to Mar 13Transplant outside: May 22 to Jun 5
Start indoors: Feb 27 to Mar 13Transplant outside: May 22 to Jun 5
Start indoors: Mar 13 to Mar 27Transplant outside: May 15 to May 29
Start indoors: Mar 13 to Mar 27Transplant outside: Apr 17 to May 1Sow outdoors: Apr 10 to May 15Plant for fall: Aug 17 to Sep 14
Start indoors: Mar 13 to Mar 27Transplant outside: Apr 10 to Apr 24Sow outdoors: Apr 10 to Apr 24Plant for fall: Aug 3 to Aug 24
Start indoors: Mar 13 to Mar 27Transplant outside: Apr 24 to May 8Plant for fall: Jul 6 to Jul 27
Start indoors: Mar 13 to Mar 27Transplant outside: Apr 17 to May 1Plant for fall: Jul 6 to Jul 27
Start indoors: Mar 13 to Mar 27Transplant outside: Apr 24 to May 8Plant for fall: Jul 6 to Jul 27
Start indoors: Mar 27 to Apr 10Transplant outside: May 29 to Jun 12Sow outdoors: May 29 to Jun 12
Start indoors: Mar 27 to Apr 10Transplant outside: May 15 to May 29
Sow outdoors: Mar 27 to Apr 17Plant for fall: Jul 20 to Aug 10
Sow outdoors: Mar 27 to Apr 17Plant for fall: Aug 17 to Sep 7
Sow outdoors: Apr 3 to May 15Plant for fall: Aug 31 to Sep 21
Start indoors: Apr 10 to Apr 17Transplant outside: May 22 to May 29Sow outdoors: May 15 to May 29Plant for fall: Jul 27 to Aug 10
Start indoors: Apr 10 to Apr 17Sow outdoors: May 15 to May 29Plant for fall: Aug 3 to Aug 17
Start indoors: Apr 10 to Apr 17Sow outdoors: May 15 to May 29
Start indoors: Apr 10 to Apr 17Transplant outside: May 22 to Jun 5
Sow outdoors: Apr 17 to May 15Plant for fall: Jul 20 to Aug 3
Sow outdoors: Apr 17 to May 15Plant for fall: Aug 3 to Aug 17
Sow outdoors: Apr 17 to May 8
Sow outdoors: Apr 24 to May 22Plant for fall: Aug 3 to Aug 17
Sow outdoors: Apr 24 to May 15Plant for fall: Aug 17 to Sep 7
Sow outdoors: May 15 to Jun 5Plant for fall: Jul 27 to Aug 10
Sow outdoors: May 15 to May 29
Transplant outside: May 22 to Jun 12
Plant for fall: Sep 28 to Nov 2
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Warren, OH
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 13 – Feb 27 | Apr 10 – Apr 24 | — | — |
| Peppers | Feb 27 – Mar 13 | May 22 – Jun 5 | — | — |
| Eggplant | Feb 27 – Mar 13 | May 22 – Jun 5 | — | — |
| Tomatoes | Mar 13 – Mar 27 | May 15 – May 29 | — | — |
| Lettuce | Mar 13 – Mar 27 | Apr 17 – May 1 | Apr 10 – May 15 | Aug 17 – Sep 14 |
| Kale | Mar 13 – Mar 27 | Apr 10 – Apr 24 | Apr 10 – Apr 24 | Aug 3 – Aug 24 |
| Broccoli | Mar 13 – Mar 27 | Apr 24 – May 8 | — | Jul 6 – Jul 27 |
| Cabbage | Mar 13 – Mar 27 | Apr 17 – May 1 | — | Jul 6 – Jul 27 |
| Cauliflower | Mar 13 – Mar 27 | Apr 24 – May 8 | — | Jul 6 – Jul 27 |
| Okra | Mar 27 – Apr 10 | May 29 – Jun 12 | May 29 – Jun 12 | — |
| Basil | Mar 27 – Apr 10 | May 15 – May 29 | — | — |
| Peas | — | — | Mar 27 – Apr 17 | Jul 20 – Aug 10 |
| Spinach | — | — | Mar 27 – Apr 17 | Aug 17 – Sep 7 |
| Radishes | — | — | Apr 3 – May 15 | Aug 31 – Sep 21 |
| Cucumbers | Apr 10 – Apr 17 | May 22 – May 29 | May 15 – May 29 | Jul 27 – Aug 10 |
| Zucchini & Summer Squash | Apr 10 – Apr 17 | — | May 15 – May 29 | Aug 3 – Aug 17 |
| Winter Squash & Pumpkins | Apr 10 – Apr 17 | — | May 15 – May 29 | — |
| Melons & Watermelon | Apr 10 – Apr 17 | May 22 – Jun 5 | — | — |
| Carrots | — | — | Apr 17 – May 15 | Jul 20 – Aug 3 |
| Beets | — | — | Apr 17 – May 15 | Aug 3 – Aug 17 |
| Potatoes | — | — | Apr 17 – May 8 | — |
| Swiss Chard | — | — | Apr 24 – May 22 | Aug 3 – Aug 17 |
| Cilantro | — | — | Apr 24 – May 15 | Aug 17 – Sep 7 |
| Green Beans | — | — | May 15 – Jun 5 | Jul 27 – Aug 10 |
| Sweet Corn | — | — | May 15 – May 29 | — |
| Sweet Potatoes | — | May 22 – Jun 12 | — | — |
| Garlic | — | — | — | Sep 28 – Nov 2 |
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 Warren 3 S, OH weather station, 6 km away (elevation 899 ft (274 m)).
ZIP codes in Warren: 44481 44482 44483 44484 44485 44486
Frost dates near Warren
- Leavittsburg May 8 · Oct 12
- Newton Falls May 8 · Oct 12
- North Jackson May 8 · Oct 12
- Niles May 8 · Oct 12
- Mineral Ridge May 8 · Oct 12
- Lake Milton May 8 · Oct 12
- Mc Donald May 8 · Oct 12
- Girard May 1 · Oct 17
Frequently asked questions
When is the last frost in Warren, OH?
The median last spring frost in Warren, OH is May 8. There is still about a 10% chance of frost after May 25, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Warren, OH?
The median first fall frost is October 12, with about a 10% chance of frost before September 30.
How long is the growing season in Warren, OH?
About 157 days between the median last spring frost and first fall frost.
What planting zone is Warren, OH?
Warren, OH is in USDA hardiness zone 6a.