Last spring frost
Apr 12
Frost Dates for Magnolia, NJ
First fall frost
Nov 1
Growing season
200 days
Hardiness zone
7b
In an average year around Magnolia, NJ, the last spring frost (32°F) is about Apr 12 and the first fall frost is about Nov 1, giving roughly a 200-day growing season. To be safe most years, wait until Mar 28 before setting out tender plants.
Last spring frost
Dates the last frost of spring typically ends. Plant tender crops after the risk has passed for your comfort level.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | May 16 | Apr 29 | Apr 10 |
| Freeze (32°F) | May 3 | Apr 12 | Mar 28 |
| Hard (28°F) | Apr 16 | Mar 29 | Mar 13 |
| Severe (24°F) | Mar 31 | Mar 16 | Feb 27 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 16 | May 9 | May 5 | May 2 | Apr 29 | Apr 25 | Apr 21 | Apr 17 | Apr 10 |
| 32°F | May 3 | Apr 27 | Apr 21 | Apr 17 | Apr 12 | Apr 8 | Apr 5 | Apr 1 | Mar 28 |
| 28°F | Apr 16 | Apr 7 | Apr 3 | Mar 31 | Mar 29 | Mar 25 | Mar 21 | Mar 18 | Mar 13 |
| 24°F | Mar 31 | Mar 26 | Mar 22 | Mar 19 | Mar 16 | Mar 13 | Mar 9 | Mar 4 | Feb 27 |
| 20°F | Mar 21 | Mar 16 | Mar 13 | Mar 9 | Mar 5 | Mar 1 | Feb 26 | Feb 21 | Feb 12 |
| 16°F | Mar 11 | Mar 5 | Feb 28 | Feb 24 | Feb 19 | Feb 13 | Feb 8 | Feb 3 | Jan 27 |
First fall frost
Dates the first frost of fall typically arrives. Count back by a crop's days-to-maturity to know your planting cutoff.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Oct 5 | Oct 19 | Nov 2 |
| Freeze (32°F) | Oct 17 | Nov 1 | Nov 14 |
| Hard (28°F) | Oct 31 | Nov 12 | Nov 30 |
| Severe (24°F) | Nov 8 | Nov 24 | Dec 15 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 5 | Oct 10 | Oct 13 | Oct 16 | Oct 19 | Oct 22 | Oct 26 | Oct 30 | Nov 2 |
| 32°F | Oct 17 | Oct 22 | Oct 26 | Oct 29 | Nov 1 | Nov 3 | Nov 6 | Nov 9 | Nov 14 |
| 28°F | Oct 31 | Nov 3 | Nov 6 | Nov 9 | Nov 12 | Nov 15 | Nov 18 | Nov 23 | Nov 30 |
| 24°F | Nov 8 | Nov 13 | Nov 17 | Nov 21 | Nov 24 | Nov 28 | Dec 2 | Dec 6 | Dec 15 |
| 20°F | Nov 21 | Nov 28 | Dec 2 | Dec 6 | Dec 11 | Dec 16 | Dec 21 | Dec 28 | Jan 4 |
| 16°F | Dec 7 | Dec 14 | Dec 22 | Dec 28 | Jan 1 | Jan 4 | Jan 9 | Jan 15 | Jan 24 |
Growing season is measured at 32°F with about 50% probability. Hardiness zone from the 2023 USDA map; frost normals from NOAA 1991-2020.
Where this data comes from
@endif These dates are computed from the nearest official weather station with long-term records: Moorestown, Nj, about 7.6 miles away@if(!empty($station['elevation_ft'])), at 45 ft elevation. The further the station and the greater the elevation difference from your yard, the more your local frost timing can vary.
How we calculate these dates
Frost and freeze dates come from the NOAA 1991–2020 U.S. Climate Normals, the National Oceanic and Atmospheric Administration's 30-year averages for each weather station. A date shown at the 50% level is the median: in half of years the frost falls on or before it. The 10% and 90% columns show the early and late ends of the range, so you can plant on the odds you're comfortable with. These are long-term averages, not a forecast for this year - always check your local outlook before planting.
Source: NOAA National Centers for Environmental Information, 1991–2020 Climate Normals (public domain). Harman is not affiliated with or endorsed by NOAA.
Frequently asked questions
When is the last frost in Magnolia, NJ?
On average, the last spring frost (32°F) around Magnolia, NJ is about Apr 12. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 28.
When is the first frost in the fall?
The first fall frost around Magnolia, NJ typically arrives about Nov 1. Count back by a crop's days to maturity to find the latest date you can plant it.
When can I plant tomatoes and other tender crops?
Tender crops like tomatoes, peppers and basil are damaged by frost, so wait until the last spring frost has passed - around Apr 12 on average, or Mar 28 to be safe most years.
How long is the growing season here?
The frost-free growing season (between the last spring and first fall 32°F frost) is about 200 days in a typical year.
Are these dates a forecast for this year?
No. They are 30-year averages from the NOAA 1991–2020 Climate Normals, not a prediction for the current year. Use them for planning and always check your local weather forecast before planting or protecting crops.
Local weather for 08049 Planting calendar → New Jersey frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026