Laurens County climate

Laurens County Frost Dates and Growing Season

NOAA 1991-2020 normals for Dublin, 10.5 km from Laurens County, elevation 230 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Dublin. 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 14 and the first fall freeze around November 13, a growing season of about 247 days.

Median at 36°F
last March 29, first November 3
Median at 32°F
last March 14, first November 13
Median at 28°F
last February 26, first November 27

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 8Apr 4Apr 1Mar 29Mar 25Mar 20Mar 16Mar 9
32°FApr 1Mar 26Mar 21Mar 17Mar 14Mar 10Mar 5Feb 28Feb 20
28°FMar 18Mar 12Mar 6Mar 1Feb 26Feb 20Feb 14Feb 6Jan 31
24°FMar 7Feb 28Feb 19Feb 12Feb 6Feb 1Jan 29Jan 21Jan 10
20°FFeb 23Feb 10Feb 3Jan 31Jan 26Jan 20Jan 13Jan 5Dec 27
16°FFeb 8Jan 31Jan 25Jan 20Jan 14Jan 9Jan 4Dec 31Dec 20

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 22Oct 27Oct 31Nov 1Nov 3Nov 6Nov 8Nov 12Nov 18
32°FNov 1Nov 4Nov 7Nov 10Nov 13Nov 16Nov 20Nov 25Dec 2
28°FNov 8Nov 15Nov 19Nov 23Nov 27Dec 1Dec 5Dec 13Dec 24
24°FNov 21Nov 28Dec 2Dec 7Dec 14Dec 23Dec 31Jan 5Jan 18
20°FDec 3Dec 11Dec 20Dec 29Jan 2Jan 9Jan 15Jan 23Feb 2
16°FDec 12Dec 21Dec 31Jan 3Jan 9Jan 14Jan 19Jan 26Feb 4

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°F244236231226221217212208201
32°F273264257252247242237231224
28°F307296288282275270264257247
24°F346334326318310304297288275
20°F365365359350342334328318306
16°F365365365365365365361348334

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
97% of years
20°F or colder
73% of years
16°F or colder
35% 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
2,262
Cooling degree days, base 65°F
2,267
Growing degree days, base 40°F
9,202
Growing degree days, base 45°F
7,509
Growing degree days, base 50°F
5,953
Growing degree days, base 55°F
4,563
Growing degree days, base 60°F
3,331

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January568171
February423392
March25720258
April9680436
May14246698
June0426876
July05421,007
August0505970
September4325771
October8799480
November30717200
December506396

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 10.5 km from Laurens County. 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 USC00092839 (Dublin). Public domain.