Brigantine climate

Brigantine Frost Dates and Growing Season

NOAA 1991-2020 normals for Atlantic City, 6.1 km from Brigantine, elevation 10 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Atlantic City. A median date has an even chance of a later freeze in spring, or an earlier one in fall.

The last spring freeze typically comes around March 26 and the first fall freeze around November 21, a growing season of about 240 days.

Median at 36°F
last April 4, first November 10
Median at 32°F
last March 26, first November 21
Median at 28°F
last March 15, first December 2

Last freeze in spring

The chance of a later freeze than the date shown. At 10 percent, one spring in ten still freezes after the date; planting after the 10 percent date for 32°F is the cautious choice.

Threshold10%20%30%40%50%60%70%80%90%
36°FApr 18Apr 13Apr 10Apr 7Apr 4Apr 2Mar 31Mar 29Mar 23
32°FApr 6Apr 3Mar 31Mar 28Mar 26Mar 22Mar 19Mar 15Mar 10
28°FMar 30Mar 25Mar 21Mar 18Mar 15Mar 12Mar 9Mar 5Feb 27
24°FMar 21Mar 16Mar 12Mar 9Mar 6Mar 3Feb 27Feb 21Feb 13
20°FMar 12Mar 6Mar 2Feb 27Feb 22Feb 17Feb 10Feb 4Jan 27
16°FFeb 28Feb 22Feb 16Feb 10Feb 5Jan 31Jan 27Jan 19Jan 11

First freeze in fall

The chance of an earlier freeze than the date shown. At 10 percent, one fall in ten freezes before the date.

Threshold10%20%30%40%50%60%70%80%90%
36°FOct 30Nov 2Nov 4Nov 7Nov 10Nov 12Nov 16Nov 19Nov 26
32°FNov 6Nov 11Nov 14Nov 17Nov 21Nov 24Nov 29Dec 2Dec 7
28°FNov 16Nov 20Nov 25Nov 30Dec 2Dec 6Dec 10Dec 15Dec 22
24°FNov 27Dec 4Dec 8Dec 13Dec 17Dec 21Dec 25Dec 31Jan 7
20°FDec 9Dec 17Dec 24Dec 28Jan 1Jan 5Jan 9Jan 14Jan 22
16°FDec 24Dec 31Jan 3Jan 7Jan 11Jan 14Jan 18Jan 25Feb 3

Growing season length

Days between the last spring and first fall freeze at each threshold, with the chance of a season at least that long.

Threshold10%20%30%40%50%60%70%80%90%
36°F238231226221217214210206200
32°F262254249245240235232227220
28°F288280274270263259254249241
24°F312303298292288283278271262
20°F335327321316309305300295287
16°F365354343337333327321315306

How often it gets that cold

The share of years with at least one night at or below each temperature.

36°F or colder
100% of years
32°F or colder
100% of years
28°F or colder
100% of years
24°F or colder
100% of years
20°F or colder
99% of years
16°F or colder
88% of years

Degree days

A degree day is one degree of the daily mean temperature beyond a base, for one day. Heating degree days count cold (the fuel a house burns), cooling degree days heat, growing degree days the warmth a crop needs; each crop has its own base.

Heating degree days, base 65°F
4,438
Cooling degree days, base 65°F
999
Growing degree days, base 40°F
6,163
Growing degree days, base 45°F
4,773
Growing degree days, base 50°F
3,570
Growing degree days, base 55°F
2,547
Growing degree days, base 60°F
1,697

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January90704
February77803
March693019
April4133101
May17429321
June20167597
July0322787
August0303767
September22151579
October20123296
November480080
December749017

What this means

NOAA computes these from the daily lows at the station over 1991-2020, fitting the dates of each year's last and first freeze to a distribution, so a date can be stated at any level of risk. 36°F is a frost risk for tender plants on a clear, calm night, since the ground cools below the air above it; 32°F is a freeze; 28°F is a hard freeze that kills most annuals.

The station is 6.1 km from Brigantine. Low ground, valleys and open fields freeze earlier and later than a town center or a hillside.

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Sources

NOAA NCEI U.S. Climate Normals, 1991-2020, annual and seasonal normals for station USW00013724 (Atlantic City). Public domain.