Munford climate

Munford Frost Dates and Growing Season

NOAA 1991-2020 normals for Anniston Metro AP, 10.9 km from Munford, elevation 594 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Anniston Metro AP. 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 23 and the first fall freeze around November 9, a growing season of about 231 days.

Median at 36°F
last April 6, first October 31
Median at 32°F
last March 23, first November 9
Median at 28°F
last March 8, first November 21

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 2Mar 30Mar 25Mar 18
32°FApr 9Apr 4Mar 31Mar 27Mar 23Mar 18Mar 15Mar 10Mar 1
28°FMar 28Mar 21Mar 16Mar 13Mar 8Mar 4Feb 28Feb 23Feb 15
24°FMar 15Mar 8Mar 3Feb 26Feb 21Feb 16Feb 9Feb 2Jan 26
20°FMar 4Feb 26Feb 16Feb 9Feb 3Jan 30Jan 24Jan 16Jan 5
16°FFeb 23Feb 8Feb 2Jan 30Jan 24Jan 19Jan 12Jan 6Dec 26

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 17Oct 21Oct 24Oct 27Oct 31Nov 1Nov 4Nov 7Nov 11
32°FOct 27Nov 1Nov 3Nov 6Nov 9Nov 11Nov 14Nov 19Nov 25
28°FNov 5Nov 9Nov 13Nov 17Nov 21Nov 25Nov 29Dec 3Dec 9
24°FNov 13Nov 20Nov 26Nov 30Dec 3Dec 8Dec 17Dec 26Jan 4
20°FNov 27Dec 4Dec 11Dec 20Dec 26Jan 1Jan 6Jan 15Jan 27
16°FDec 11Dec 22Dec 29Jan 2Jan 7Jan 13Jan 19Jan 26Feb 3

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°F229222216212208203199194187
32°F257248241235231226221216208
28°F289277270263258251246238230
24°F326313304296289283275266257
20°F359344336330321313306298284
16°F365365365360349341334328312

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
93% of years
16°F or colder
66% 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
2,634
Cooling degree days, base 65°F
1,971
Growing degree days, base 40°F
8,596
Growing degree days, base 45°F
6,962
Growing degree days, base 50°F
5,472
Growing degree days, base 55°F
4,135
Growing degree days, base 60°F
2,967

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January641156
February471281
March31415214
April12856383
May24195636
June0372822
July0477942
August0462927
September7295738
October11884437
November36511160
December567277

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 10.9 km from Munford. 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 USW00013871 (Anniston Metro AP). Public domain.