Frost dates for New Brunswick 3 SE, NJ
At New Brunswick 3 SE, the median last spring frost (32°F) is Apr 15 and the median first fall frost is Oct 26, for a typical growing season of 193 days. For a 90% chance that the last frost has passed, wait until May 1. Nearby ZIP codes are in USDA hardiness zones 7a to 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 26First fall frost (median)50% chance of 32°F by this date
- 193 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 29 | May 14 |
| 32°F | Apr 2 | Apr 15 | May 1 |
| 28°F | Mar 18 | Apr 2 | Apr 17 |
| 24°F | Mar 5 | Mar 21 | Apr 3 |
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 3 | Oct 14 | Oct 30 |
| 32°F | Oct 11 | Oct 26 | Nov 8 |
| 28°F | Oct 23 | Nov 7 | Nov 23 |
| 24°F | Nov 5 | Nov 20 | Dec 8 |
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 | 147 days | 169 days | 189 days |
| 32°F | 171 days | 193 days | 214 days |
| 28°F | 199 days | 218 days | 239 days |
| 24°F | 224 days | 245 days | 266 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 |
|---|---|---|---|
| 08901 | 7a | 0 to 5°F | 2 km |
| 08850 | 7a | 0 to 5°F | 3 km |
| 08904 | 7a | 0 to 5°F | 3 km |
| 08882 | 7a | 0 to 5°F | 5 km |
| 08816 | 7a | 0 to 5°F | 5 km |
| 08817 | 7a | 0 to 5°F | 5 km |
| 08872 | 7a | 0 to 5°F | 6 km |
| 08902 | 7a | 0 to 5°F | 7 km |
| 08837 | 7a | 0 to 5°F | 8 km |
| 08854 | 7a | 0 to 5°F | 8 km |
| 08884 | 7a | 0 to 5°F | 9 km |
| 08873 | 7a | 0 to 5°F | 10 km |
| 08832 | 7b | 5 to 10°F | 10 km |
| 08859 | 7a | 0 to 5°F | 10 km |
| 08828 | 7a | 0 to 5°F | 10 km |
| 08879 | 7b | 5 to 10°F | 12 km |
| 08824 | 7a | 0 to 5°F | 13 km |
| 08823 | 7a | 0 to 5°F | 13 km |
| 08861 | 7b | 5 to 10°F | 14 km |
| 08852 | 7a | 0 to 5°F | 14 km |
| 10307 | 7b | 5 to 10°F | 16 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 USC00286055, at 40.4728, -74.4225, elevation 34 m (111 ft).
- Data quality: Standard (24+ years of data), 30 years of freeze data.
- Average days per year at or below 32°F: 110.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Plainfield (15 km)
- Freehold-Marlboro (23 km)
- Cranford (23 km)
- Somerville 4 NW (25 km)
- Hightstown 2 W (26 km)
- Somerville Somerset Airport (27 km)
- Wertsville 4 NE (30 km)
- Canoe Brook (31 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.