Frost dates for Phillipsburg-Easton Brg, NJ
At Phillipsburg-Easton Brg, the median last spring frost (32°F) is Apr 18 and the median first fall frost is Oct 25, for a typical growing season of 188 days. For a 90% chance that the last frost has passed, wait until May 5. Nearby ZIP codes are in USDA hardiness zones 6b to 7a.
- Apr 18Last spring frost (median)50% chance of 32°F after this date
- May 5Safer planting date10% chance of 32°F after this date
- Oct 25First fall frost (median)50% chance of 32°F by this date
- 188 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 17 | May 1 | May 17 |
| 32°F | Apr 5 | Apr 18 | May 5 |
| 28°F | Mar 23 | Apr 4 | Apr 18 |
| 24°F | Mar 10 | Mar 25 | Apr 6 |
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 13 | Oct 27 |
| 32°F | Oct 11 | Oct 25 | Nov 5 |
| 28°F | Oct 24 | Nov 4 | Nov 16 |
| 24°F | Nov 2 | Nov 13 | Nov 28 |
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 | 143 days | 164 days | 184 days |
| 32°F | 165 days | 188 days | 206 days |
| 28°F | 195 days | 212 days | 230 days |
| 24°F | 216 days | 234 days | 254 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 |
|---|---|---|---|
| 08865 | 7a | 0 to 5°F | 5 km |
| 18040 | 7a | 0 to 5°F | 6 km |
| 18042 | 7a | 0 to 5°F | 6 km |
| 18045 | 7a | 0 to 5°F | 6 km |
| 18085 | 7a | 0 to 5°F | 7 km |
| 08886 | 7a | 0 to 5°F | 8 km |
| 18083 | 7a | 0 to 5°F | 9 km |
| 08804 | 7a | 0 to 5°F | 10 km |
| 18064 | 7a | 0 to 5°F | 12 km |
| 08802 | 7a | 0 to 5°F | 15 km |
| 18091 | 6b | -5 to 0°F | 18 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 USC00286979, at 40.6956, -75.2000, elevation 71 m (232 ft).
- Data quality: Representative (10+ years), 10 years of freeze data.
- Average days per year at or below 32°F: 119.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Belvidere Brg (18 km)
- Flemington 5 NNW (30 km)
- Lambertville (43 km)
- Wertsville 4 NE (45 km)
- Somerville Somerset Airport (45 km)
- Somerville 4 NW (47 km)
- Andover Aeroflex Airport (52 km)
- Newton (55 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.