Pembroke climate

Pembroke Frost Dates and Growing Season

NOAA 1991-2020 normals for Lumberton Muni AP, 14.8 km from Pembroke, elevation 121 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Lumberton Muni AP. 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 24 and the first fall freeze around November 10, a growing season of about 233 days.

Median at 36°F
last April 5, first November 1
Median at 32°F
last March 24, first November 10
Median at 28°F
last March 6, first November 25

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 20Apr 15Apr 11Apr 8Apr 5Apr 2Mar 29Mar 25Mar 18
32°FApr 9Apr 5Apr 1Mar 28Mar 24Mar 19Mar 15Mar 9Feb 28
28°FMar 30Mar 23Mar 17Mar 12Mar 6Mar 1Feb 25Feb 18Feb 7
24°FMar 16Mar 6Feb 28Feb 23Feb 16Feb 10Feb 2Jan 29Jan 18
20°FFeb 27Feb 13Feb 4Jan 31Jan 27Jan 21Jan 16Jan 7Dec 28
16°FFeb 6Feb 1Jan 30Jan 23Jan 17Jan 12Jan 7Dec 31Dec 21

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 19Oct 23Oct 26Oct 29Nov 1Nov 3Nov 5Nov 9Nov 15
32°FOct 27Nov 1Nov 4Nov 7Nov 10Nov 14Nov 18Nov 24Dec 1
28°FNov 5Nov 11Nov 15Nov 20Nov 25Nov 30Dec 4Dec 10Dec 22
24°FNov 19Nov 26Dec 2Dec 7Dec 13Dec 20Dec 29Jan 4Jan 16
20°FDec 1Dec 8Dec 15Dec 23Dec 30Jan 4Jan 12Jan 18Jan 31
16°FDec 11Dec 21Dec 31Jan 3Jan 9Jan 14Jan 18Jan 26Feb 2

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°F231223217213209205201196190
32°F261251244239233228223217208
28°F298284276267261256249243232
24°F338325316307299290282273261
20°F365365354344336330321312300
16°F365365365365365362350341330

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
99% of years
20°F or colder
84% of years
16°F or colder
46% 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
2,609
Cooling degree days, base 65°F
2,087
Growing degree days, base 40°F
8,727
Growing degree days, base 45°F
7,089
Growing degree days, base 50°F
5,600
Growing degree days, base 55°F
4,264
Growing degree days, base 60°F
3,091

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January623266
February481582
March34215196
April13667387
May25211651
June0413862
July0516981
August0465930
September7292735
October11085444
November33914177
December546489

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 14.8 km from Pembroke. 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 USW00013776 (Lumberton Muni AP). Public domain.