Last frost date in Mentor, OH

Average last frost
April 15

The average last frost in Mentor is April 15. By April 27 the chance of another 32°F night drops to 1 in 10. The first fall frost usually arrives about November 9, which leaves 209 frost-free days. An early freeze before October 30 happens one year in ten.

Safe after (10% risk)
Apr 27
Average first frost
Nov 9
Frost-free season
209 days
Hard freeze (28°F) ends
Apr 4
Next 7 nights in Mentor

No frost in the next 7 nights

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

  1. ThuOct 2244°
  2. FriOct 2338°
  3. SatOct 2440°
  4. SunOct 2548°
  5. MonOct 2648°
  6. TueOct 2746°
  7. WedOct 2846°
JanFebMarAprMayJunJulAugSepOctNovDecLast frost Apr 15First frost Nov 9209 frost-free daysBlue: chance of 32°F frost. Green: average frost-free season.JFMAMJJASOND209 frost-free days
Frost risk through the year at Painesville 4 NW, 4.8 miles from Mentor.

Planting calendar for Mentor

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 22–May 6
PumpkinsApr 29–May 13
SunflowersApr 15–May 6
CucumbersApr 29–May 6
CornApr 22–May 6
Sweet potatoesMay 6–May 20
WatermelonApr 29–May 13
Green beansApr 22–May 13
ZucchiniApr 22–May 6
OkraMay 6–May 20
PeppersApr 29–May 13
BasilApr 22–May 6
Butternut squashApr 22–May 6
CantaloupeApr 29–May 13
EggplantApr 29–May 13
Cool-season crops
JanFebMarAprMayJunJulAugSepOctNovDec
PotatoesMar 18–Apr 1
OnionsMar 4–Mar 25
CarrotsMar 25–Apr 29
LettuceApr 1–Apr 22
BroccoliMar 18–Apr 1
BeetsMar 18–Apr 29
PeasMar 4–Mar 18
CabbageMar 18–Apr 1
RadishesMar 11–Apr 22
Brussels sproutsApr 1–Apr 15
SpinachMar 4–Mar 25
CilantroApr 1–Apr 22
KaleMar 18–Apr 1
Collard greensMar 18–Apr 1
TurnipsMar 18–Apr 1
DillApr 15–Apr 29
CeleryApr 22–Apr 29
CauliflowerApr 1–Apr 15
LeeksApr 1–Apr 15
Swiss chardApr 1–Apr 29
ParsleyApr 1–Apr 22
Fall bulbs and garlic
JanFebMarAprMayJunJulAugSepOctNovDec
Tulip bulbsOct 26–Nov 30
GarlicOct 19–Nov 23
Daffodil bulbsOct 12–Nov 23
Perennials
JanFebMarAprMayJunJulAugSepOctNovDec
StrawberriesMar 18–Apr 1
AsparagusMar 18–Apr 1

Frost probabilities

ThresholdSpring, 90% chance laterSpring, 50%Spring, 10%Fall, 10% chance earlierFall, 50%Fall, 90%
Light frost, 32°FApr 2Apr 15Apr 27Oct 30Nov 9Nov 25
Hard freeze, 28°FMar 21Apr 4Apr 18Nov 7Nov 21Dec 7

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 Painesville 4 NW (USC00336389) sits 4.8 miles from the center of Mentor at 600 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 Mentor, OH?

The average last frost date in Mentor is April 15, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after April 27.

When is the first frost in Mentor?

The first frost in fall usually comes around November 9. One year in ten it arrives before October 30.

How long is the growing season in Mentor?

About 209 days between the average last and first frost.

When should I plant tomatoes in Mentor?

Plant tomato seedlings outside from April 22 to May 6. Start seeds indoors six to eight weeks earlier.

Nearby in Ohio

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