Last spring frost
Apr 15
Frost Dates for McGuire AFB, NJ
First fall frost
Oct 29
Growing season
196 days
Hardiness zone
7a
In an average year around McGuire AFB, NJ, the last spring frost (32°F) is about Apr 15 and the first fall frost is about Oct 29, giving roughly a 196-day growing season. To be safe most years, wait until Apr 1 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 13 | Apr 28 | Apr 15 |
| Freeze (32°F) | Apr 29 | Apr 15 | Apr 1 |
| Hard (28°F) | Apr 15 | Apr 1 | Mar 18 |
| Severe (24°F) | Apr 3 | Mar 20 | Mar 5 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 13 | May 7 | May 3 | Apr 30 | Apr 28 | Apr 25 | Apr 22 | Apr 19 | Apr 15 |
| 32°F | Apr 29 | Apr 24 | Apr 20 | Apr 18 | Apr 15 | Apr 12 | Apr 9 | Apr 6 | Apr 1 |
| 28°F | Apr 15 | Apr 10 | Apr 6 | Apr 4 | Apr 1 | Mar 31 | Mar 27 | Mar 23 | Mar 18 |
| 24°F | Apr 3 | Mar 31 | Mar 27 | Mar 23 | Mar 20 | Mar 18 | Mar 14 | Mar 11 | Mar 5 |
| 20°F | Mar 23 | Mar 19 | Mar 16 | Mar 12 | Mar 9 | Mar 6 | Mar 3 | Feb 28 | Feb 22 |
| 16°F | Mar 16 | Mar 9 | Mar 5 | Mar 1 | Feb 27 | Feb 23 | Feb 19 | Feb 14 | Feb 7 |
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 4 | Oct 17 | Oct 31 |
| Freeze (32°F) | Oct 14 | Oct 29 | Nov 10 |
| Hard (28°F) | Oct 26 | Nov 7 | Nov 21 |
| Severe (24°F) | Nov 4 | Nov 18 | Dec 5 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 4 | Oct 8 | Oct 11 | Oct 14 | Oct 17 | Oct 21 | Oct 24 | Oct 27 | Oct 31 |
| 32°F | Oct 14 | Oct 19 | Oct 23 | Oct 26 | Oct 29 | Nov 1 | Nov 2 | Nov 5 | Nov 10 |
| 28°F | Oct 26 | Oct 31 | Nov 2 | Nov 4 | Nov 7 | Nov 10 | Nov 13 | Nov 15 | Nov 21 |
| 24°F | Nov 4 | Nov 9 | Nov 13 | Nov 15 | Nov 18 | Nov 21 | Nov 25 | Nov 30 | Dec 5 |
| 20°F | Nov 15 | Nov 20 | Nov 25 | Nov 29 | Dec 1 | Dec 5 | Dec 9 | Dec 16 | Dec 23 |
| 16°F | Nov 30 | Dec 5 | Dec 10 | Dec 14 | Dec 19 | Dec 24 | Dec 28 | Jan 1 | Jan 9 |
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: Philadelphia/Mt Holly Wfo, Nj, about 12.4 miles away@if(!empty($station['elevation_ft'])), at 63 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 McGuire AFB, NJ?
On average, the last spring frost (32°F) around McGuire AFB, NJ is about Apr 15. In cooler years it can run later, so for a safer bet many gardeners wait until Apr 1.
When is the first frost in the fall?
The first fall frost around McGuire AFB, NJ typically arrives about Oct 29. 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 15 on average, or Apr 1 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 196 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 08562 Planting calendar → New Jersey frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026