Last frost date in Youngstown, OH
The average last frost in Youngstown is May 1. By May 20 the chance of another 32°F night drops to 1 in 10. The first fall frost usually arrives about October 17, which leaves 167 frost-free days. An early freeze before October 1 happens one year in ten.
- Safe after (10% risk)
- May 20
- Average first frost
- Oct 17
- Frost-free season
- 167 days
- Hard freeze (28°F) ends
- Apr 20
Frost likely Fri night, low 32°F
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2239°
- FriOct 2332°frost
- SatOct 2432°frost
- SunOct 2538°
- MonOct 2643°
- TueOct 2744°
- WedOct 2841°
Planting calendar for Youngstown
Windows count forward or back from the average frost dates above. Click a crop for dates across Ohio.
TomatoesMay 8–May 22
PumpkinsMay 15–May 29
SunflowersMay 1–May 22
CucumbersMay 15–May 22
CornMay 8–May 22
Sweet potatoesMay 22–Jun 5
WatermelonMay 15–May 29
Green beansMay 8–May 29
ZucchiniMay 8–May 22
OkraMay 22–Jun 5
PeppersMay 15–May 29
BasilMay 8–May 22
Butternut squashMay 8–May 22
CantaloupeMay 15–May 29
EggplantMay 15–May 29
PotatoesApr 3–Apr 17
OnionsMar 20–Apr 10
CarrotsApr 10–May 15
LettuceApr 17–May 8
BroccoliApr 3–Apr 17
BeetsApr 3–May 15
PeasMar 20–Apr 3
CabbageApr 3–Apr 17
RadishesMar 27–May 8
Brussels sproutsApr 17–May 1
SpinachMar 20–Apr 10
CilantroApr 17–May 8
KaleApr 3–Apr 17
Collard greensApr 3–Apr 17
TurnipsApr 3–Apr 17
DillMay 1–May 15
CeleryMay 8–May 15
CauliflowerApr 17–May 1
LeeksApr 17–May 1
Swiss chardApr 17–May 15
ParsleyApr 17–May 8
Tulip bulbsOct 3–Nov 7
GarlicSep 26–Oct 31
Daffodil bulbsSep 19–Oct 31
StrawberriesApr 3–Apr 17
AsparagusApr 3–Apr 17Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Apr 16 | May 1 | May 20 | Oct 1 | Oct 17 | Nov 1 |
| Hard freeze, 28°F | Apr 5 | Apr 20 | May 7 | Oct 15 | Nov 1 | Nov 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 Youngstown Regional Airport (USW00014852) sits 10.8 miles from the center of Youngstown at 1,180 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 Youngstown, OH?
The average last frost date in Youngstown is May 1, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after May 20.
When is the first frost in Youngstown?
The first frost in fall usually comes around October 17. One year in ten it arrives before October 1.
How long is the growing season in Youngstown?
About 167 days between the average last and first frost.
When should I plant tomatoes in Youngstown?
Plant tomato seedlings outside from May 8 to May 22. Start seeds indoors six to eight weeks earlier.