Baldwyn climate

Baldwyn Frost Dates and Growing Season

NOAA 1991-2020 normals for Booneville, 15.4 km from Baldwyn, elevation 490 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Booneville. 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 1 and the first fall freeze around November 3, a growing season of about 216 days.

Median at 36°F
last April 12, first October 25
Median at 32°F
last April 1, first November 3
Median at 28°F
last March 20, first November 13

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 29Apr 24Apr 20Apr 16Apr 12Apr 9Apr 6Apr 2Mar 29
32°FApr 16Apr 11Apr 7Apr 4Apr 1Mar 29Mar 25Mar 21Mar 15
28°FApr 6Apr 1Mar 28Mar 23Mar 20Mar 16Mar 12Mar 6Feb 28
24°FMar 24Mar 19Mar 14Mar 10Mar 6Mar 2Feb 27Feb 21Feb 13
20°FMar 14Mar 8Mar 3Feb 27Feb 22Feb 15Feb 8Feb 2Jan 24
16°FMar 4Feb 26Feb 16Feb 8Feb 2Jan 30Jan 24Jan 18Jan 6

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 17Oct 20Oct 23Oct 25Oct 28Oct 30Nov 2Nov 6
32°FOct 21Oct 26Oct 29Nov 1Nov 3Nov 5Nov 8Nov 12Nov 18
28°FNov 1Nov 4Nov 6Nov 9Nov 13Nov 17Nov 21Nov 25Dec 1
24°FNov 7Nov 13Nov 18Nov 23Nov 26Nov 30Dec 4Dec 9Dec 21
20°FNov 17Nov 26Dec 1Dec 6Dec 11Dec 19Dec 25Jan 1Jan 8
16°FDec 4Dec 12Dec 22Dec 27Jan 1Jan 4Jan 10Jan 15Jan 28

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°F215209203199195191187181174
32°F239229224219216212208203196
28°F265256250245239234229223215
24°F297284276269264259254249239
20°F328317308301295288280271261
16°F362347338331325317309302289

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
93% 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
3,412
Cooling degree days, base 65°F
1,617
Growing degree days, base 40°F
7,659
Growing degree days, base 45°F
6,151
Growing degree days, base 50°F
4,786
Growing degree days, base 55°F
3,570
Growing degree days, base 60°F
2,513

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January791030
February610141
March4327145
April19536309
May47140558
June2314762
July0425890
August0403868
September17233666
October16953362
November4545113
December695143

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 15.4 km from Baldwyn. 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 USC00220955 (Booneville). Public domain.