USDA Hardiness Zone 7b
Frost Dates for 08302 — Bridgeton, New Jersey
NOAA 1991–2020 normals from Seabrook Farms, NJ (104 ft), 3 miles north.
Updated
In Bridgeton, the last spring frost (32°F) is around April 10 in half of years and has passed by April 25 in nine years out of ten. The first fall frost comes around November 1, as early as October 16 one year in ten, leaving a typical freeze-free season of 205 days (NOAA, Seabrook Farms, NJ).
- Last spring frost
- April 10
- First fall frost
- November 1
- Growing season
- 205 days
- Hardiness zone
- 7b
50% probability
50% probability
freeze-free, 50%
5 to 10°F (-15.0 to -12.2°C) coldest night
- First snow
- December 26
- Last snow
- March 2
- Winters with snow
- 96%
- Snow per year
- 11.8"
median, 1991–2020
median, 1991–2020
26 of 27 observed
NOAA normal
Frost risk by date in Bridgeton
Half of springs at Seabrook Farms, NJ see their last 32°F night by April 10; only one in ten is past it by March 28, and one in ten still has one after April 25. Planting tender crops after April 16 leaves a 30% risk of a frost on them, after April 20 20%, and after April 25 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 57% of the 56 New Jersey stations behind this site's ZIP pages.
In fall the first 32°F night comes by November 1 in half of years, as early as October 16 one year in ten, and holds off past November 15 one year in ten. A hard freeze of 28°F follows 12 days later, around November 13; in spring the one-in-ten date for 28°F is April 11, 14 days before the 32°F one. The freeze-free season lasts 205 days in a typical year, longer than at 70% of the 56 New Jersey stations; it reaches 225 days one year in ten and falls short of 183 one year in ten. On average 87 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 13 days longer, to about April 23, and return around October 21. Severe cold of 16°F or below comes in 99% of winters, usually between December 30 and February 23.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 8 | Apr 14 | Apr 17 | Apr 20 | Apr 23 | Apr 27 | Apr 30 | May 3 | May 8 |
| 32°F | Mar 28 | Mar 31 | Apr 3 | Apr 6 | Apr 10 | Apr 12 | Apr 16 | Apr 20 | Apr 25 |
| 28°F | Mar 12 | Mar 18 | Mar 22 | Mar 26 | Mar 29 | Mar 31 | Apr 3 | Apr 6 | Apr 11 |
| 24°F | Feb 28 | Mar 5 | Mar 9 | Mar 13 | Mar 16 | Mar 19 | Mar 22 | Mar 26 | Mar 30 |
| 20°F | Feb 14 | Feb 23 | Feb 28 | Mar 3 | Mar 6 | Mar 9 | Mar 13 | Mar 17 | Mar 21 |
| 16°F99% of yrs | Jan 31 | Feb 5 | Feb 12 | Feb 18 | Feb 23 | Feb 27 | Mar 2 | Mar 6 | Mar 13 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 7 | Oct 12 | Oct 14 | Oct 17 | Oct 21 | Oct 25 | Oct 28 | Nov 1 | Nov 5 |
| 32°F | Oct 16 | Oct 22 | Oct 26 | Oct 30 | Nov 1 | Nov 4 | Nov 7 | Nov 11 | Nov 15 |
| 28°F | Oct 28 | Nov 3 | Nov 6 | Nov 10 | Nov 13 | Nov 16 | Nov 19 | Nov 24 | Nov 30 |
| 24°F | Nov 11 | Nov 16 | Nov 20 | Nov 24 | Nov 28 | Dec 1 | Dec 5 | Dec 11 | Dec 17 |
| 20°F | Nov 23 | Dec 1 | Dec 4 | Dec 9 | Dec 13 | Dec 17 | Dec 21 | Dec 26 | Jan 3 |
| 16°F99% of yrs | Dec 7 | Dec 13 | Dec 20 | Dec 25 | Dec 30 | Jan 2 | Jan 7 | Jan 13 | Jan 21 |
Freeze probabilities 1991–2020 at Seabrook Farms, NJ, from NOAA NCEI U.S. Climate Normals. Where a temperature is reached in fewer than 99.5% of years, the dates describe only the years that reach it. Not a forecast.
Frost risk on any date in 08302 →Compare Bridgeton with another place →
Weather by month in Bridgeton
July is the warmest month at Seabrook Farms, NJ, averaging 86°F by day and 67°F at night; January is the coldest at 41°F and 25°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 78% of years.
Warmth for growing adds up to 3,698 growing degree days a year (base 50°F), more than at 71% of the 56 New Jersey stations. 33% of them (1,236) have built up by the end of June, and July adds the most, 829. Precipitation totals 47.8 inches a year, most in August (4.9") and least in February (2.7"); May to September bring 46% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 41 | 25 | 3.4 | 100% | 23 | 5 |
| Feb | 44 | 27 | 2.7 | 100% | 20 | 6 |
| Mar | 51 | 33 | 4.6 | 99% | 14 | 33 |
| Apr | 63 | 42 | 3.7 | 78% | 2 | 150 |
| May | 73 | 52 | 3.6 | 3% | 0 | 390 |
| Jun | 82 | 62 | 4.4 | 0% | 0 | 653 |
| Jul | 86 | 67 | 4.6 | 0% | 0 | 829 |
| Aug | 84 | 65 | 4.9 | 0% | 0 | 770 |
| Sep | 78 | 59 | 4.3 | 0% | 0 | 555 |
| Oct | 67 | 47 | 4.0 | 45% | 1 | 234 |
| Nov | 56 | 38 | 3.2 | 99% | 8 | 61 |
| Dec | 46 | 30 | 4.4 | 100% | 19 | 13 |
Monthly normals 1991–2020 at Seabrook Farms, NJ (104 ft), NOAA NCEI. "32°F night": chance of at least one in the month. GDD: growing degree days, base 50°F.
Compared with the next station
The nearest other station, Woodstown Pittsgrov 4E, NJ, 8 miles northeast of Bridgeton, has a last frost 1 day later (April 11), a first frost 2 days later (November 3), a season 1 day longer.
When it snows in Bridgeton, New Jersey
The first measurable snow (0.1 inch or more) in Bridgeton usually arrives around December 26, and the last of the season around March 2. Those are the middle dates across the winters of 1991–2020 at Seabrook Farms, NJ, 3.1 miles away: half of years saw snow earlier, half later. Snow fell in 96% of those winters. The last 32°F night of spring typically comes 39 days after the last snow.
Planting calendar for 08302
| When | What to do |
|---|---|
| January 30 – February 13 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 13 – February 27 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 13 – March 27 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 10 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 9 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 18 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 1 onward | Plant garlic, mulch beds, lift tender bulbsGarlic wants a cold spell; bare soil loses structure over winter. |
The weeks before and after the 50% dates are general rules of thumb, not NOAA figures; a seed packet gives the timing for each variety.
Where these figures come from
ZIP 08302 is 3 miles from Seabrook Farms, NJ, which stands at 104 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 08302 in zone 7b, the band where the coldest night of the year averaged 5 to 10°F (-15.0 to -12.2°C) over 1991–2020; a zone describes winter lows, not frost dates.
Frost dates across New Jersey →
Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged. °C converted from °F by this site.
Thirty-year averages, not a forecast: check the forecast before planting out. How stations are matched and which pages are offered to search engines: methodology.