Last frost date in Willoughby, OH

Average last frost
April 26

Expect the last frost in Willoughby around April 26. Frost after May 14 happens in only one year out of ten. The first fall frost usually arrives about October 31, which leaves 184 frost-free days. An early freeze before October 15 happens one year in ten.

Safe after (10% risk)
May 14
Average first frost
Oct 31
Frost-free season
184 days
Hard freeze (28°F) ends
Apr 16
Next 7 nights in Willoughby

No frost in the next 7 nights

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

  1. ThuOct 2244°
  2. FriOct 2339°
  3. SatOct 2441°
  4. SunOct 2548°
  5. MonOct 2648°
  6. TueOct 2746°
  7. WedOct 2846°
JanFebMarAprMayJunJulAugSepOctNovDecLast frost Apr 26First frost Oct 31184 frost-free daysBlue: chance of 32°F frost. Green: average frost-free season.JFMAMJJASOND184 frost-free days
Frost risk through the year at Kirtland-holden 2, 6.2 miles from Willoughby.

Planting calendar for Willoughby

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
TomatoesMay 3–May 17
PumpkinsMay 10–May 24
SunflowersApr 26–May 17
CucumbersMay 10–May 17
CornMay 3–May 17
Sweet potatoesMay 17–May 31
WatermelonMay 10–May 24
Green beansMay 3–May 24
ZucchiniMay 3–May 17
OkraMay 17–May 31
PeppersMay 10–May 24
BasilMay 3–May 17
Butternut squashMay 3–May 17
CantaloupeMay 10–May 24
EggplantMay 10–May 24
Cool-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
PotatoesMar 29–Apr 12
OnionsMar 15–Apr 5
CarrotsApr 5–May 10
LettuceApr 12–May 3
BroccoliMar 29–Apr 12
BeetsMar 29–May 10
PeasMar 15–Mar 29
CabbageMar 29–Apr 12
RadishesMar 22–May 3
Brussels sproutsApr 12–Apr 26
SpinachMar 15–Apr 5
CilantroApr 12–May 3
KaleMar 29–Apr 12
Collard greensMar 29–Apr 12
TurnipsMar 29–Apr 12
DillApr 26–May 10
CeleryMay 3–May 10
CauliflowerApr 12–Apr 26
LeeksApr 12–Apr 26
Swiss chardApr 12–May 10
ParsleyApr 12–May 3
Fall bulbs and garlic
JanFebMarAprMayJunJulAugSepOctNovDec
Tulip bulbsOct 17–Nov 21
GarlicOct 10–Nov 14
Daffodil bulbsOct 3–Nov 14
Perennials
JanFebMarAprMayJunJulAugSepOctNovDec
StrawberriesMar 29–Apr 12
AsparagusMar 29–Apr 12

Frost probabilities

ThresholdSpring, 90% chance laterSpring, 50%Spring, 10%Fall, 10% chance earlierFall, 50%Fall, 90%
Light frost, 32°FApr 11Apr 26May 14Oct 15Oct 31Nov 13
Hard freeze, 28°FMar 31Apr 16Apr 30Nov 1Nov 10Nov 26

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 Kirtland-holden 2 (USC00334260) sits 6.2 miles from the center of Willoughby at 1,030 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 Willoughby, OH?

The average last frost date in Willoughby is April 26, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after May 14.

When is the first frost in Willoughby?

The first frost in fall usually comes around October 31. One year in ten it arrives before October 15.

How long is the growing season in Willoughby?

About 184 days between the average last and first frost.

When should I plant tomatoes in Willoughby?

Plant tomato seedlings outside from May 3 to May 17. Start seeds indoors six to eight weeks earlier.

Nearby in Ohio

All 87 cities in Ohio