Evans County climate

Evans County Frost Dates and Growing Season

NOAA 1991-2020 normals for Glennville 3NW, 19.8 km from Evans County, elevation 200 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Glennville 3NW. 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 9 and the first fall freeze around November 24, a growing season of about 258 days.

Median at 36°F
last March 23, first November 9
Median at 32°F
last March 9, first November 24
Median at 28°F
last February 23, first December 9

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 10Apr 4Mar 31Mar 27Mar 23Mar 18Mar 15Mar 10Mar 4
32°FMar 30Mar 23Mar 18Mar 14Mar 9Mar 5Mar 1Feb 25Feb 16
28°FMar 17Mar 9Mar 4Feb 28Feb 23Feb 16Feb 7Feb 2Jan 23
24°FMar 3Feb 23Feb 13Feb 6Feb 1Jan 28Jan 21Jan 13Jan 2
20°FFeb 18Feb 6Feb 1Jan 29Jan 21Jan 14Jan 10Jan 3Dec 28
16°FFeb 6Jan 31Jan 29Jan 21Jan 13Jan 9Jan 6Dec 31Dec 23

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 27Nov 1Nov 3Nov 6Nov 9Nov 13Nov 18Nov 22Nov 30
32°FNov 5Nov 11Nov 16Nov 19Nov 24Nov 28Dec 1Dec 6Dec 15
28°FNov 18Nov 25Dec 1Dec 4Dec 9Dec 14Dec 22Jan 1Jan 8
24°FDec 1Dec 9Dec 17Dec 26Jan 1Jan 5Jan 10Jan 17Jan 30
20°FDec 12Dec 25Jan 1Jan 5Jan 9Jan 13Jan 22Jan 30Feb 7
16°FDec 14Dec 28Jan 2Jan 7Jan 10Jan 16Jan 26Jan 31Feb 6

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°F257248243238231226221216209
32°F287277269263258252247241231
28°F326314305298291285277268259
24°F365352340333326319310301289
20°F365365365365360350340331317
16°F365365365365365365365365345

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
99% of years
24°F or colder
90% of years
20°F or colder
56% of years
16°F or colder
17% 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
1,910
Cooling degree days, base 65°F
2,351
Growing degree days, base 40°F
9,619
Growing degree days, base 45°F
7,890
Growing degree days, base 50°F
6,266
Growing degree days, base 55°F
4,793
Growing degree days, base 60°F
3,480

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January4995108
February3556138
March22932294
April8095466
May11257712
June0429879
July0524989
August0499964
September2344792
October63126530
November24527257
December4277137

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 19.8 km from Evans County. 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 USC00093754 (Glennville 3NW). Public domain.