Frost dates for Lehighton 1ssw, PA
At Lehighton 1ssw, the median last spring frost (32°F) is Apr 21 and the median first fall frost is Oct 23, for a typical growing season of 184 days. For a 90% chance that the last frost has passed, wait until May 9. Nearby ZIP codes are in USDA hardiness zones 6b to 7a.
- Apr 21Last spring frost (median)50% chance of 32°F after this date
- May 9Safer planting date10% chance of 32°F after this date
- Oct 23First fall frost (median)50% chance of 32°F by this date
- 184 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 19 | May 3 | May 20 |
| 32°F | Apr 7 | Apr 21 | May 9 |
| 28°F | Mar 24 | Apr 7 | Apr 22 |
| 24°F | Mar 13 | Mar 29 | Apr 8 |
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 | Oct 1 | Oct 11 | Oct 25 |
| 32°F | Oct 7 | Oct 23 | Nov 6 |
| 28°F | Oct 20 | Nov 4 | Nov 19 |
| 24°F | Nov 3 | Nov 17 | Dec 3 |
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 | 139 days | 159 days | 179 days |
| 32°F | 162 days | 184 days | 206 days |
| 28°F | 190 days | 211 days | 232 days |
| 24°F | 216 days | 235 days | 256 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 |
|---|---|---|---|
| 18235 | 6b | -5 to 0°F | 1 km |
| 18244 | 6b | -5 to 0°F | 2 km |
| 18030 | 6b | -5 to 0°F | 3 km |
| 18212 | 6b | -5 to 0°F | 6 km |
| 18012 | 7a | 0 to 5°F | 9 km |
| 18079 | 6b | -5 to 0°F | 9 km |
| 18080 | 6b | -5 to 0°F | 11 km |
| 18053 | 6b | -5 to 0°F | 11 km |
| 18071 | 6b | -5 to 0°F | 12 km |
| 18229 | 6b | -5 to 0°F | 12 km |
| 18240 | 6b | -5 to 0°F | 13 km |
| 18088 | 6b | -5 to 0°F | 13 km |
| 18250 | 6b | -5 to 0°F | 14 km |
| 18211 | 6b | -5 to 0°F | 14 km |
| 18232 | 6b | -5 to 0°F | 15 km |
| 18255 | 6b | -5 to 0°F | 17 km |
| 18218 | 6b | -5 to 0°F | 19 km |
| 18058 | 6b | -5 to 0°F | 19 km |
| 18333 | 6b | -5 to 0°F | 19 km |
| 18216 | 6b | -5 to 0°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 USC00364934, at 40.8222, -75.6961, elevation 139 m (455 ft).
- Data quality: Estimated from nearby stations (2+ years), 9 years of freeze data.
- Average days per year at or below 32°F: 132.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Allentown Intl Airport (28 km)
- Rodale Rsch Center (30 km)
- Francis E Walter Dam (33 km)
- Mahanoy City 2 N (38 km)
- Hamburg (39 km)
- Mount Pocono Mountains Airport (44 km)
- Springtown 1 NNE (45 km)
- E Stroudsburg (46 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.