Warrior climate

Warrior Frost Dates and Growing Season

NOAA 1991-2020 normals for Pinson, 17.9 km from Warrior, elevation 608 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Pinson. 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 April 4 and the first fall freeze around November 1, a growing season of about 212 days.

Median at 36°F
last April 16, first October 25
Median at 32°F
last April 4, first November 1
Median at 28°F
last March 22, first November 11

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 30Apr 26Apr 23Apr 19Apr 16Apr 12Apr 8Apr 4Mar 30
32°FApr 22Apr 15Apr 11Apr 7Apr 4Mar 31Mar 28Mar 23Mar 16
28°FApr 10Apr 5Mar 31Mar 26Mar 22Mar 18Mar 13Mar 7Feb 27
24°FMar 27Mar 19Mar 14Mar 10Mar 5Mar 1Feb 24Feb 18Feb 9
20°FMar 14Mar 7Mar 1Feb 24Feb 18Feb 11Feb 4Jan 31Jan 23
16°FMar 6Feb 25Feb 14Feb 7Feb 1Jan 28Jan 23Jan 15Jan 3

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 13Oct 17Oct 20Oct 22Oct 25Oct 27Oct 30Nov 1Nov 5
32°FOct 21Oct 25Oct 28Oct 30Nov 1Nov 4Nov 7Nov 10Nov 15
28°FOct 29Nov 2Nov 5Nov 8Nov 11Nov 15Nov 20Nov 24Dec 1
24°FNov 7Nov 13Nov 17Nov 22Nov 26Dec 1Dec 4Dec 10Dec 19
20°FNov 21Nov 28Dec 2Dec 7Dec 14Dec 23Dec 30Jan 4Jan 14
16°FDec 6Dec 14Dec 24Dec 29Jan 2Jan 7Jan 13Jan 20Jan 30

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°F212205200196191186182178171
32°F235227221217212207203198190
28°F264254248242237231225219211
24°F297287280273267261253246237
20°F334322315307299291284276266
16°F365355345337332324314305293

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
2,998
Cooling degree days, base 65°F
1,758
Growing degree days, base 40°F
8,086
Growing degree days, base 45°F
6,506
Growing degree days, base 50°F
5,076
Growing degree days, base 55°F
3,806
Growing degree days, base 60°F
2,699

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January706141
February525160
March36112183
April16248346
May38161588
June1331780
July0443908
August0426891
September10259699
October14866393
November4178133
December629256

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 17.9 km from Warrior. 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 USC00016478 (Pinson). Public domain.