Hampton climate

Hampton Frost Dates and Growing Season

NOAA 1991-2020 normals for Jonesboro, 17.3 km from Hampton, elevation 930 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Jonesboro. 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 25 and the first fall freeze around November 12, a growing season of about 235 days.

Median at 36°F
last April 6, first November 1
Median at 32°F
last March 25, first November 12
Median at 28°F
last March 8, first November 28

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 21Apr 16Apr 12Apr 9Apr 6Apr 3Mar 31Mar 27Mar 20
32°FApr 10Apr 4Mar 31Mar 28Mar 25Mar 19Mar 16Mar 10Mar 2
28°FMar 29Mar 24Mar 18Mar 13Mar 8Mar 3Feb 27Feb 22Feb 12
24°FMar 16Mar 7Mar 1Feb 25Feb 18Feb 11Feb 5Jan 31Jan 22
20°FMar 4Feb 24Feb 12Feb 5Feb 1Jan 28Jan 22Jan 16Jan 6
16°FFeb 23Feb 8Feb 1Jan 29Jan 25Jan 20Jan 15Jan 8Dec 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 22Oct 26Oct 29Oct 31Nov 1Nov 4Nov 7Nov 10Nov 16
32°FOct 31Nov 2Nov 6Nov 9Nov 12Nov 15Nov 19Nov 25Dec 2
28°FNov 8Nov 14Nov 18Nov 23Nov 28Dec 1Dec 5Dec 11Dec 22
24°FNov 19Nov 28Dec 2Dec 8Dec 15Dec 23Dec 30Jan 4Jan 12
20°FDec 5Dec 13Dec 22Dec 29Jan 1Jan 7Jan 12Jan 18Jan 31
16°FDec 17Dec 28Jan 1Jan 7Jan 12Jan 16Jan 20Jan 27Feb 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°F233226220216211207203198192
32°F263253247241235230226219211
28°F297284277270265258252245237
24°F332321312305297291284276264
20°F365351341334327320312305291
16°F365365365362352344336329316

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
99% of years
20°F or colder
89% of years
16°F or colder
60% 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
2,972
Cooling degree days, base 65°F
1,787
Growing degree days, base 40°F
8,128
Growing degree days, base 45°F
6,540
Growing degree days, base 50°F
5,105
Growing degree days, base 55°F
3,829
Growing degree days, base 60°F
2,724

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January698040
February535053
March3728172
April16446343
May33177610
June2349798
July0459924
August0428893
September10258697
October13557395
November4044129
December619152

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 17.3 km from Hampton. 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 USC00094700 (Jonesboro). Public domain.