Brundidge climate

Brundidge Frost Dates and Growing Season

NOAA 1991-2020 normals for Troy, 17.7 km from Brundidge, elevation 542 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Troy. 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 10 and the first fall freeze around November 21, a growing season of about 257 days.

Median at 36°F
last March 24, first November 9
Median at 32°F
last March 10, first November 21
Median at 28°F
last February 24, first December 7

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 14Apr 7Apr 2Mar 29Mar 24Mar 19Mar 15Mar 10Mar 2
32°FMar 30Mar 23Mar 18Mar 14Mar 10Mar 5Mar 1Feb 23Feb 15
28°FMar 17Mar 10Mar 4Feb 28Feb 24Feb 18Feb 12Feb 4Jan 26
24°FMar 6Feb 28Feb 18Feb 11Feb 5Jan 31Jan 26Jan 17Jan 4
20°FFeb 24Feb 9Feb 2Jan 31Jan 25Jan 20Jan 13Jan 6Dec 28
16°FFeb 9Feb 2Jan 30Jan 25Jan 20Jan 16Jan 11Jan 6Jan 1

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 28Nov 1Nov 3Nov 6Nov 9Nov 12Nov 16Nov 20Nov 29
32°FNov 4Nov 8Nov 12Nov 17Nov 21Nov 26Dec 1Dec 5Dec 14
28°FNov 13Nov 21Nov 28Dec 1Dec 7Dec 14Dec 21Dec 31Jan 8
24°FNov 30Dec 6Dec 16Dec 24Dec 31Jan 4Jan 9Jan 16Jan 29
20°FDec 12Dec 26Jan 1Jan 5Jan 9Jan 14Jan 19Jan 28Feb 6
16°FJan 1Jan 5Jan 7Jan 12Jan 16Jan 19Jan 24Jan 31Feb 5

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°F260248242236230225219213204
32°F289278270263257251245238228
28°F325309300294288281274265254
24°F364346335330323314306297283
20°F365365365364353342334327314
16°F365365365365365365365354335

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
99% of years
24°F or colder
92% of years
20°F or colder
66% of years
16°F or colder
29% 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
2,087
Cooling degree days, base 65°F
2,234
Growing degree days, base 40°F
9,346
Growing degree days, base 45°F
7,639
Growing degree days, base 50°F
6,053
Growing degree days, base 55°F
4,615
Growing degree days, base 60°F
3,335

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January542287
February3836127
March24629278
April9080443
May14245696
June0410859
July0491956
August0474939
September2345793
October70127525
November27920227
December4635122

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 17.7 km from Brundidge. 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 USC00018323 (Troy). Public domain.