Last frost date in Dublin, OH

Average last frost
April 22

Expect the last frost in Dublin around April 22. Frost after May 9 happens in only one year out of ten. The first fall frost usually arrives about October 23, which leaves 183 frost-free days. An early freeze before October 9 happens one year in ten.

Safe after (10% risk)
May 9
Average first frost
Oct 23
Frost-free season
183 days
Hard freeze (28°F) ends
Apr 9
Next 7 nights in Dublin

No frost in the next 7 nights

National Weather Service forecast, updated Oct 22, 12:57 UTC

  1. ThuOct 2242°
  2. FriOct 2339°
  3. SatOct 2441°
  4. SunOct 2542°
  5. MonOct 2646°
  6. TueOct 2746°
  7. WedOct 2843°
JanFebMarAprMayJunJulAugSepOctNovDecLast frost Apr 22First frost Oct 23183 frost-free daysBlue: chance of 32°F frost. Green: average frost-free season.JFMAMJJASOND183 frost-free days
Frost risk through the year at Columbus Ohio State University Airport, 4.3 miles from Dublin.

Planting calendar for Dublin

Windows count forward or back from the average frost dates above. Click a crop for dates across Ohio.

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
Warm-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
TomatoesApr 29–May 13
PumpkinsMay 6–May 20
SunflowersApr 22–May 13
CucumbersMay 6–May 13
CornApr 29–May 13
Sweet potatoesMay 13–May 27
WatermelonMay 6–May 20
Green beansApr 29–May 20
ZucchiniApr 29–May 13
OkraMay 13–May 27
PeppersMay 6–May 20
BasilApr 29–May 13
Butternut squashApr 29–May 13
CantaloupeMay 6–May 20
EggplantMay 6–May 20
Cool-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
PotatoesMar 25–Apr 8
OnionsMar 11–Apr 1
CarrotsApr 1–May 6
LettuceApr 8–Apr 29
BroccoliMar 25–Apr 8
BeetsMar 25–May 6
PeasMar 11–Mar 25
CabbageMar 25–Apr 8
RadishesMar 18–Apr 29
Brussels sproutsApr 8–Apr 22
SpinachMar 11–Apr 1
CilantroApr 8–Apr 29
KaleMar 25–Apr 8
Collard greensMar 25–Apr 8
TurnipsMar 25–Apr 8
DillApr 22–May 6
CeleryApr 29–May 6
CauliflowerApr 8–Apr 22
LeeksApr 8–Apr 22
Swiss chardApr 8–May 6
ParsleyApr 8–Apr 29
Fall bulbs and garlic
JanFebMarAprMayJunJulAugSepOctNovDec
Tulip bulbsOct 9–Nov 13
GarlicOct 2–Nov 6
Daffodil bulbsSep 25–Nov 6
Perennials
JanFebMarAprMayJunJulAugSepOctNovDec
StrawberriesMar 25–Apr 8
AsparagusMar 25–Apr 8

Frost probabilities

ThresholdSpring, 90% chance laterSpring, 50%Spring, 10%Fall, 10% chance earlierFall, 50%Fall, 90%
Light frost, 32°FApr 6Apr 22May 9Oct 9Oct 23Nov 4
Hard freeze, 28°FMar 24Apr 9Apr 26Oct 20Nov 2Nov 15

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 Ohio State University Airport (USW00004804) sits 4.3 miles from the center of Dublin at 905 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 Dublin, OH?

The average last frost date in Dublin is April 22, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after May 9.

When is the first frost in Dublin?

The first frost in fall usually comes around October 23. One year in ten it arrives before October 9.

How long is the growing season in Dublin?

About 183 days between the average last and first frost.

When should I plant tomatoes in Dublin?

Plant tomato seedlings outside from April 29 to May 13. Start seeds indoors six to eight weeks earlier.

Nearby in Ohio

All 87 cities in Ohio