Booneville climate

Booneville Frost Dates and Growing Season

NOAA 1991-2020 normals for Booneville 3 Sse, 5.2 km from Booneville, elevation 600 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Booneville 3 Sse. 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 4 and the first fall freeze around November 1, a growing season of about 210 days.

Median at 36°F
last April 16, first October 23
Median at 32°F
last April 4, first November 1
Median at 28°F
last March 23, first November 10

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 30Apr 26Apr 22Apr 19Apr 16Apr 13Apr 9Apr 6Apr 1
32°FApr 21Apr 16Apr 11Apr 7Apr 4Apr 1Mar 30Mar 25Mar 17
28°FApr 10Apr 4Mar 31Mar 28Mar 23Mar 17Mar 13Mar 8Mar 1
24°FMar 30Mar 22Mar 16Mar 12Mar 7Mar 3Feb 28Feb 24Feb 16
20°FMar 16Mar 8Mar 4Feb 28Feb 25Feb 20Feb 14Feb 8Jan 30
16°FMar 5Feb 28Feb 21Feb 15Feb 7Feb 1Jan 27Jan 19Jan 7

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 10Oct 14Oct 18Oct 21Oct 23Oct 26Oct 29Nov 1Nov 5
32°FOct 18Oct 24Oct 28Oct 31Nov 1Nov 4Nov 7Nov 11Nov 17
28°FOct 28Nov 1Nov 4Nov 6Nov 10Nov 14Nov 18Nov 23Nov 30
24°FNov 4Nov 9Nov 13Nov 17Nov 22Nov 27Dec 1Dec 5Dec 12
20°FNov 14Nov 20Nov 27Dec 1Dec 5Dec 11Dec 17Dec 23Dec 31
16°FNov 26Dec 2Dec 10Dec 19Dec 25Dec 30Jan 3Jan 11Jan 24

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°F210203198194189186181177170
32°F233224219214210206202197189
28°F260251243239233227221215207
24°F286276269263259252246239230
20°F321306298291285279271263253
16°F350338331324315307300291280

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
100% of years
16°F or colder
94% 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
3,461
Cooling degree days, base 65°F
1,855
Growing degree days, base 40°F
7,866
Growing degree days, base 45°F
6,365
Growing degree days, base 50°F
5,014
Growing degree days, base 55°F
3,810
Growing degree days, base 60°F
2,757

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January806022
February613143
March4417137
April19641315
May47159577
June1348796
July0496961
August1470935
September16258691
October16269384
November4526119
December727133

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 5.2 km from Booneville. 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 USC00030832 (Booneville 3 Sse). Public domain.