Frost dates for Youngstown Regional Airport, OH
At Youngstown Regional Airport, the median last spring frost (32°F) is May 1 and the median first fall frost is Oct 17, for a typical growing season of 167 days. For a 90% chance that the last frost has passed, wait until May 20. Nearby ZIP codes are in USDA hardiness zone 6a.
- May 1Last spring frost (median)50% chance of 32°F after this date
- May 20Safer planting date10% chance of 32°F after this date
- Oct 17First fall frost (median)50% chance of 32°F by this date
- 167 daysGrowing season (median)between 32°F freezes
Last spring frost dates
The chance that the temperature drops to the threshold after each date.
| Temperature | 90% chance later | 50% chance later | 10% chance later |
|---|---|---|---|
| 36°F | Apr 27 | May 16 | May 31 |
| 32°F | Apr 16 | May 1 | May 20 |
| 28°F | Apr 5 | Apr 20 | May 7 |
| 24°F | Mar 24 | Apr 6 | Apr 21 |
First fall frost dates
The chance that the temperature has dropped to the threshold by each date.
| Temperature | 10% chance by | 50% chance by | 90% chance by |
|---|---|---|---|
| 36°F | Sep 22 | Oct 5 | Oct 20 |
| 32°F | Oct 1 | Oct 17 | Nov 1 |
| 28°F | Oct 15 | Nov 1 | Nov 15 |
| 24°F | Nov 1 | Nov 12 | Nov 30 |
Growing season length
Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.
| Temperature | 9 in 10 years at least | 5 in 10 years at least | 1 in 10 years at least |
|---|---|---|---|
| 36°F | 121 days | 143 days | 165 days |
| 32°F | 145 days | 167 days | 190 days |
| 28°F | 167 days | 194 days | 217 days |
| 24°F | 200 days | 220 days | 241 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 44473 | 6a | -10 to -5°F | 1 km |
| 44403 | 6a | -10 to -5°F | 8 km |
| 44418 | 6a | -10 to -5°F | 8 km |
| 44420 | 6a | -10 to -5°F | 9 km |
| 44424 | 6a | -10 to -5°F | 11 km |
| 44438 | 6a | -10 to -5°F | 12 km |
| 44425 | 6a | -10 to -5°F | 12 km |
| 44404 | 6a | -10 to -5°F | 12 km |
| 44504 | 6a | -10 to -5°F | 15 km |
| 16146 | 6a | -10 to -5°F | 15 km |
| 44505 | 6a | -10 to -5°F | 15 km |
| 16121 | 6a | -10 to -5°F | 16 km |
| 16161 | 6a | -10 to -5°F | 16 km |
| 44555 | 6a | -10 to -5°F | 16 km |
| 44503 | 6a | -10 to -5°F | 17 km |
| 44506 | 6a | -10 to -5°F | 18 km |
| 44502 | 6a | -10 to -5°F | 19 km |
Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.
About this station
- NOAA station ID USW00014852, at 41.2544, -80.6739, elevation 360 m (1,180 ft).
- Data quality: Standard (24+ years of data), 30 years of freeze data.
- Average days per year at or below 32°F: 127.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Mosquito Creek Lake (9 km)
- Warren 3 S (13 km)
- Hiram (29 km)
- Dorset (48 km)
- Ravenna 2 S (53 km)
- Millport 4 NE (56 km)
- Chardon (57 km)
- Ashtabula Co Airport (58 km)
Sources
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.
- USDA Agricultural Research Service and PRISM Group, Oregon State University, 2023 Plant Hardiness Zone Map ZIP code tables (CONUS, Alaska, Hawaii, Puerto Rico), files dated November 17, 2023. Data © PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 1, 2026. Official map: planthardiness.ars.usda.gov.
- U.S. Census Bureau, 2024 Gazetteer ZIP Code Tabulation Areas file, dated August 30, 2024 (ZIP centroids used to find the nearest station).
Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.