Hogansville climate

Hogansville Frost Dates and Growing Season

NOAA 1991-2020 normals for Newnan 7 Wnw, 25.2 km from Hogansville, elevation 795 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Newnan 7 Wnw. 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 3 and the first fall freeze around November 2, a growing season of about 214 days.

Median at 36°F
last April 14, first October 25
Median at 32°F
last April 3, first November 2
Median at 28°F
last March 21, first November 15

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°FMay 1Apr 26Apr 21Apr 18Apr 14Apr 11Apr 8Apr 4Mar 31
32°FApr 18Apr 13Apr 9Apr 6Apr 3Mar 31Mar 27Mar 22Mar 16
28°FApr 8Apr 2Mar 29Mar 25Mar 21Mar 18Mar 14Mar 9Feb 28
24°FMar 27Mar 20Mar 17Mar 13Mar 9Mar 3Feb 27Feb 20Feb 10
20°FMar 16Mar 10Mar 3Feb 26Feb 19Feb 12Feb 4Jan 29Jan 19
16°FMar 6Feb 27Feb 14Feb 6Jan 31Jan 27Jan 20Jan 12Jan 2

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 18Oct 21Oct 23Oct 25Oct 28Oct 30Nov 1Nov 5
32°FOct 22Oct 26Oct 30Nov 1Nov 2Nov 5Nov 7Nov 11Nov 18
28°FNov 1Nov 4Nov 8Nov 11Nov 15Nov 18Nov 22Nov 28Dec 3
24°FNov 9Nov 15Nov 20Nov 26Dec 1Dec 3Dec 7Dec 17Dec 29
20°FNov 22Dec 1Dec 5Dec 13Dec 22Dec 27Jan 1Jan 7Jan 17
16°FDec 8Dec 20Dec 27Jan 1Jan 4Jan 8Jan 15Jan 22Feb 1

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°F213207201197194189184179172
32°F237227223219214210207202193
28°F266256249243239233228223215
24°F302291283276269264257250240
20°F339328317309301294287279269
16°F365357348340334328319308296

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
98% of years
16°F or colder
83% 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
2,965
Cooling degree days, base 65°F
1,681
Growing degree days, base 40°F
8,020
Growing degree days, base 45°F
6,425
Growing degree days, base 50°F
4,984
Growing degree days, base 55°F
3,709
Growing degree days, base 60°F
2,606

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January695037
February518161
March3787167
April16241337
May40155580
June1327775
July0432897
August0412877
September13245682
October14953379
November3926138
December618154

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 25.2 km from Hogansville. 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 USC00096335 (Newnan 7 Wnw). Public domain.