Hazlehurst climate

Hazlehurst Frost Dates and Growing Season

NOAA 1991-2020 normals for Hazlehurst 5 Sw, 6.3 km from Hazlehurst, elevation 600 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Hazlehurst 5 Sw. 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 245 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 28, 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 20Apr 11Apr 6Apr 3Mar 29Mar 26Mar 20Mar 15Mar 9
32°FApr 4Mar 28Mar 23Mar 18Mar 14Mar 10Mar 6Mar 1Feb 23
28°FMar 19Mar 14Mar 8Mar 4Feb 28Feb 23Feb 17Feb 9Jan 30
24°FMar 10Mar 2Feb 25Feb 17Feb 8Feb 1Jan 28Jan 19Jan 9
20°FFeb 27Feb 14Feb 5Jan 31Jan 27Jan 22Jan 16Jan 9Dec 29
16°FFeb 10Feb 1Jan 28Jan 22Jan 17Jan 13Jan 8Jan 1Dec 24

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 20Oct 26Oct 29Nov 1Nov 3Nov 6Nov 9Nov 13Nov 19
32°FNov 1Nov 4Nov 7Nov 10Nov 13Nov 17Nov 21Nov 27Dec 3
28°FNov 6Nov 11Nov 17Nov 22Nov 27Dec 1Dec 5Dec 10Dec 23
24°FNov 19Nov 29Dec 4Dec 9Dec 16Dec 24Jan 1Jan 5Jan 15
20°FDec 7Dec 16Dec 24Dec 31Jan 4Jan 8Jan 14Jan 22Feb 5
16°FDec 15Dec 25Jan 1Jan 3Jan 8Jan 12Jan 16Jan 24Feb 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°F245236230225220215209203194
32°F273264257251245240234226219
28°F309298289281274268263255245
24°F346334324316308302294287273
20°F365365359351342336329319305
16°F365365365365365363353343332

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
96% of years
20°F or colder
75% of years
16°F or colder
41% 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
2,011
Cooling degree days, base 65°F
2,291
Growing degree days, base 40°F
9,479
Growing degree days, base 45°F
7,776
Growing degree days, base 50°F
6,184
Growing degree days, base 55°F
4,729
Growing degree days, base 60°F
3,420

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January5127115
February36013151
March22136307
April8891456
May12249702
June0411861
July0491956
August0480945
September3342789
October75136528
November27925237
December46211138

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 6.3 km from Hazlehurst. Low ground, valleys and open fields freeze earlier and later than a town center or a hillside.

More

Sources

NOAA NCEI U.S. Climate Normals, 1991-2020, annual and seasonal normals for station USC00223920 (Hazlehurst 5 Sw). Public domain.