Frost dates for Pennsauken 1n, NJ
At Pennsauken 1n, the median last spring frost (32°F) is Apr 15 and the median first fall frost is Oct 31, for a typical growing season of 199 days. For a 90% chance that the last frost has passed, wait until May 1. Nearby ZIP codes are in USDA hardiness zone 7b.
- Apr 15Last spring frost (median)50% chance of 32°F after this date
- May 1Safer planting date10% chance of 32°F after this date
- Oct 31First fall frost (median)50% chance of 32°F by this date
- 199 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 14 | Apr 27 | May 15 |
| 32°F | Apr 1 | Apr 15 | May 1 |
| 28°F | Mar 17 | Apr 1 | Apr 14 |
| 24°F | Mar 2 | Mar 19 | Apr 2 |
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 6 | Oct 19 | Nov 1 |
| 32°F | Oct 16 | Oct 31 | Nov 12 |
| 28°F | Oct 31 | Nov 10 | Nov 24 |
| 24°F | Nov 7 | Nov 21 | Dec 9 |
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 | 152 days | 174 days | 195 days |
| 32°F | 177 days | 199 days | 218 days |
| 28°F | 204 days | 223 days | 243 days |
| 24°F | 226 days | 247 days | 272 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 |
|---|---|---|---|
| 08109 | 7b | 5 to 10°F | 3 km |
| 08110 | 7b | 5 to 10°F | 3 km |
| 08002 | 7b | 5 to 10°F | 4 km |
| 08065 | 7b | 5 to 10°F | 4 km |
| 08077 | 7b | 5 to 10°F | 5 km |
| 19137 | 7b | 5 to 10°F | 5 km |
| 08105 | 7b | 5 to 10°F | 7 km |
| 08108 | 7b | 5 to 10°F | 7 km |
| 19135 | 7b | 5 to 10°F | 7 km |
| 08033 | 7b | 5 to 10°F | 8 km |
| 08107 | 7b | 5 to 10°F | 8 km |
| 19124 | 7b | 5 to 10°F | 8 km |
| 08106 | 7b | 5 to 10°F | 9 km |
| 08035 | 7b | 5 to 10°F | 10 km |
| 08007 | 7b | 5 to 10°F | 12 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 USC00286864, at 39.9661, -75.0219, elevation 14 m (46 ft).
- Data quality: Standard (24+ years of data), 25 years of freeze data.
- Average days per year at or below 32°F: 103.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Moorestown (5 km)
- Mount Holly S Jersey Airport (15 km)
- Philadelphia/mt Holly WFO (18 km)
- Glassboro 2 NE (26 km)
- Indian Mills 2 W (28 km)
- Trenton Mercer Co Airport (39 km)
- Trenton State College (39 km)
- Hammonton 1 NE (40 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.