Jones County climate

Jones County Frost Dates and Growing Season

NOAA 1991-2020 normals for Anson, 3.1 km from Jones County, elevation 1717 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Anson. 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 31 and the first fall freeze around November 6, a growing season of about 221 days.

Median at 36°F
last April 9, first October 29
Median at 32°F
last March 31, first November 6
Median at 28°F
last March 17, first November 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 25Apr 20Apr 16Apr 13Apr 9Apr 6Apr 4Mar 31Mar 25
32°FApr 15Apr 9Apr 6Apr 3Mar 31Mar 27Mar 23Mar 17Mar 11
28°FApr 4Mar 31Mar 27Mar 22Mar 17Mar 13Mar 9Mar 5Feb 27
24°FMar 27Mar 18Mar 12Mar 9Mar 5Mar 2Feb 26Feb 20Feb 12
20°FMar 11Mar 6Mar 2Feb 27Feb 21Feb 14Feb 8Feb 1Jan 22
16°FMar 4Feb 26Feb 17Feb 10Feb 5Jan 31Jan 24Jan 14Dec 31

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 16Oct 20Oct 24Oct 27Oct 29Nov 1Nov 2Nov 6Nov 10
32°FOct 23Oct 29Nov 1Nov 3Nov 6Nov 9Nov 12Nov 16Nov 22
28°FNov 1Nov 5Nov 9Nov 12Nov 16Nov 19Nov 24Nov 29Dec 3
24°FNov 9Nov 14Nov 19Nov 24Nov 28Dec 1Dec 4Dec 9Dec 18
20°FNov 19Nov 26Dec 1Dec 6Dec 10Dec 17Dec 24Jan 1Jan 8
16°FDec 2Dec 9Dec 15Dec 23Dec 29Jan 3Jan 11Jan 22Feb 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°F222215210205201197193187181
32°F247238231225221216212206199
28°F267259254249242238232225217
24°F294283276270266261255248240
20°F332318308301295288281273261
16°F365355344334328319310302292

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
2,794
Cooling degree days, base 65°F
2,374
Growing degree days, base 40°F
8,926
Growing degree days, base 45°F
7,327
Growing degree days, base 50°F
5,860
Growing degree days, base 55°F
4,545
Growing degree days, base 60°F
3,382

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January672145
February503379
March34220213
April12788423
May27249687
June1450900
July05671,032
August05531,018
September11322761
October113109471
November36912177
December630155

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 3.1 km from Jones 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 USC00410268 (Anson). Public domain.