Frost dates for Springboro 3 WNW, PA
At Springboro 3 WNW, the median last spring frost (32°F) is May 8 and the median first fall frost is Oct 16, for a typical growing season of 160 days. For a 90% chance that the last frost has passed, wait until May 23. Nearby ZIP codes are in USDA hardiness zones 6a to 7a.
- May 8Last spring frost (median)50% chance of 32°F after this date
- May 23Safer planting date10% chance of 32°F after this date
- Oct 16First fall frost (median)50% chance of 32°F by this date
- 160 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 | May 2 | May 20 | Jun 1 |
| 32°F | Apr 23 | May 8 | May 23 |
| 28°F | Apr 9 | Apr 26 | May 14 |
| 24°F | Mar 29 | Apr 12 | Apr 26 |
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 17 | Oct 2 | Oct 18 |
| 32°F | Oct 1 | Oct 16 | Nov 2 |
| 28°F | Oct 13 | Nov 1 | Nov 16 |
| 24°F | Nov 1 | Nov 13 | 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 | 113 days | 135 days | 158 days |
| 32°F | 136 days | 160 days | 183 days |
| 28°F | 165 days | 188 days | 208 days |
| 24°F | 194 days | 214 days | 238 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 |
|---|---|---|---|
| 16435 | 6a | -10 to -5°F | 4 km |
| 16401 | 6a | -10 to -5°F | 7 km |
| 16475 | 6a | -10 to -5°F | 9 km |
| 16406 | 6a | -10 to -5°F | 9 km |
| 16443 | 6b | -5 to 0°F | 14 km |
| 16410 | 6a | -10 to -5°F | 15 km |
| 44030 | 6b | -5 to 0°F | 16 km |
| 16411 | 6b | -5 to 0°F | 18 km |
| 16430 | 7a | 0 to 5°F | 21 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 USC00368361, at 41.8161, -80.4250, elevation 306 m (1,005 ft).
- Data quality: Representative (10+ years), 24 years of freeze data.
- Average days per year at or below 32°F: 141.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Linesville 1 S (19 km)
- Port Meadville Airport (27 km)
- Jamestown 2 NW (35 km)
- Erie Intl Airport (36 km)
- Union City Filtration Plant (48 km)
- Titusville Wtr Wks (64 km)
- Mercer (68 km)
- Franklin (68 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.