Hardin County climate

Hardin County Frost Dates and Growing Season

NOAA 1991-2020 normals for Lumberton, 22.2 km from Hardin County, elevation 39 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Lumberton. 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 February 25 and the first fall freeze around November 30, a growing season of about 281 days.

Median at 36°F
last March 11, first November 16
Median at 32°F
last February 25, first November 30
Median at 28°F
last February 5, first December 16

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 3Mar 27Mar 20Mar 14Mar 11Mar 5Mar 1Feb 25Feb 19
32°FMar 18Mar 10Mar 4Feb 28Feb 25Feb 20Feb 14Feb 6Jan 29
28°FMar 6Feb 26Feb 19Feb 12Feb 5Feb 1Jan 29Jan 22Jan 10
24°FFeb 24Feb 10Feb 3Jan 31Jan 25Jan 17Jan 12Jan 3Dec 25
20°FFeb 8Feb 2Jan 30Jan 23Jan 17Jan 10Jan 5Jan 1Dec 22
16°F–––––––––

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 31Nov 4Nov 8Nov 12Nov 16Nov 19Nov 24Nov 28Dec 3
32°FNov 8Nov 15Nov 20Nov 25Nov 30Dec 2Dec 6Dec 10Dec 21
28°FNov 23Dec 1Dec 5Dec 9Dec 16Dec 24Jan 1Jan 5Jan 19
24°FDec 6Dec 15Dec 24Jan 1Jan 3Jan 7Jan 13Jan 22Feb 1
20°FDec 15Dec 27Jan 1Jan 3Jan 8Jan 14Jan 19Jan 31Feb 3
16°F–––––––––

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°F280270263256249244237232221
32°F312300292286281273265257247
28°F345334327320313306298288277
24°F365365365361351342334327313
20°F365365365365365365365360342
16°F365365365365365365365365365

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
96% of years
24°F or colder
64% of years
20°F or colder
24% of years
16°F or colder
5% 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
1,646
Cooling degree days, base 65°F
2,722
Growing degree days, base 40°F
10,231
Growing degree days, base 45°F
8,481
Growing degree days, base 50°F
6,830
Growing degree days, base 55°F
5,305
Growing degree days, base 60°F
3,929

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January4589123
February30617183
March15458380
April51120520
May4317778
June0472922
July05531,018
August05591,024
September1402852
October44163585
November20938299
December42012146

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 22.2 km from Hardin 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 USC00415435 (Lumberton). Public domain.