Last frost date in Gahanna, OH
In Gahanna, the last spring frost comes around April 18 in an average year. Wait until May 5 if you want 90% odds of no more frost. The first fall frost usually arrives about October 27, which leaves 191 frost-free days. An early freeze before October 14 happens one year in ten.
- Safe after (10% risk)
- May 5
- Average first frost
- Oct 27
- Frost-free season
- 191 days
- Hard freeze (28°F) ends
- Apr 5
No frost in the next 7 nights
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2243°
- FriOct 2340°
- SatOct 2441°
- SunOct 2543°
- MonOct 2647°
- TueOct 2747°
- WedOct 2844°
Planting calendar for Gahanna
Windows count forward or back from the average frost dates above. Click a crop for dates across Ohio.
TomatoesApr 25–May 9
PumpkinsMay 2–May 16
SunflowersApr 18–May 9
CucumbersMay 2–May 9
CornApr 25–May 9
Sweet potatoesMay 9–May 23
WatermelonMay 2–May 16
Green beansApr 25–May 16
ZucchiniApr 25–May 9
OkraMay 9–May 23
PeppersMay 2–May 16
BasilApr 25–May 9
Butternut squashApr 25–May 9
CantaloupeMay 2–May 16
EggplantMay 2–May 16
PotatoesMar 21–Apr 4
OnionsMar 7–Mar 28
CarrotsMar 28–May 2
LettuceApr 4–Apr 25
BroccoliMar 21–Apr 4
BeetsMar 21–May 2
PeasMar 7–Mar 21
CabbageMar 21–Apr 4
RadishesMar 14–Apr 25
Brussels sproutsApr 4–Apr 18
SpinachMar 7–Mar 28
CilantroApr 4–Apr 25
KaleMar 21–Apr 4
Collard greensMar 21–Apr 4
TurnipsMar 21–Apr 4
DillApr 18–May 2
CeleryApr 25–May 2
CauliflowerApr 4–Apr 18
LeeksApr 4–Apr 18
Swiss chardApr 4–May 2
ParsleyApr 4–Apr 25
Tulip bulbsOct 13–Nov 17
GarlicOct 6–Nov 10
Daffodil bulbsSep 29–Nov 10
StrawberriesMar 21–Apr 4
AsparagusMar 21–Apr 4Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Apr 4 | Apr 18 | May 5 | Oct 14 | Oct 27 | Nov 7 |
| Hard freeze, 28°F | Mar 22 | Apr 5 | Apr 21 | Oct 26 | Nov 6 | Nov 21 |
Read the spring 10% column as the date after which only one year in ten still gets frost. That is the safer date for tomatoes, peppers and basil.
Where these numbers come from
NOAA station Columbus Port Columbus International Airport (USW00014821) sits 3.1 miles from the center of Gahanna at 810 feet. Its averages cover 1991 to 2020. Low spots, valleys and open fields can keep getting frost a week or two after the station stops; city centers and lakeshores usually get less of it.
Questions
When is the last frost in Gahanna, OH?
The average last frost date in Gahanna is April 18, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after May 5.
When is the first frost in Gahanna?
The first frost in fall usually comes around October 27. One year in ten it arrives before October 14.
How long is the growing season in Gahanna?
About 191 days between the average last and first frost.
When should I plant tomatoes in Gahanna?
Plant tomato seedlings outside from April 25 to May 9. Start seeds indoors six to eight weeks earlier.
Nearby in Ohio
- WestervilleApr 22
- ColumbusApr 20
- ReynoldsburgApr 18
- Upper ArlingtonApr 20
- PickeringtonApr 23
- HilliardApr 22
- DublinApr 22
- Grove CityApr 23
- DelawareApr 19
- NewarkApr 29
- LancasterApr 22
- MarysvilleApr 19