Clyde climate

Clyde Frost Dates and Growing Season

NOAA 1991-2020 normals for Abilene 6ESE, 13.3 km from Clyde, elevation 1802 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Abilene 6ESE. 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 5, a growing season of about 218 days.

Median at 36°F
last April 12, first October 29
Median at 32°F
last April 1, first November 5
Median at 28°F
last March 15, 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 28Apr 22Apr 18Apr 14Apr 12Apr 8Apr 4Apr 1Mar 26
32°FApr 19Apr 13Apr 7Apr 4Apr 1Mar 28Mar 23Mar 17Mar 10
28°FApr 5Mar 31Mar 24Mar 20Mar 15Mar 12Mar 8Mar 4Feb 26
24°FMar 24Mar 16Mar 12Mar 7Mar 4Feb 28Feb 25Feb 18Feb 10
20°FMar 11Mar 5Feb 28Feb 23Feb 16Feb 10Feb 4Jan 28Jan 17
16°FMar 1Feb 20Feb 9Feb 3Jan 29Jan 23Jan 15Jan 4Dec 24

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 18Oct 23Oct 26Oct 29Nov 1Nov 4Nov 6Nov 11
32°FOct 21Oct 28Nov 1Nov 3Nov 5Nov 8Nov 11Nov 15Nov 22
28°FNov 1Nov 6Nov 10Nov 13Nov 16Nov 20Nov 23Nov 28Dec 4
24°FNov 11Nov 15Nov 20Nov 24Nov 28Dec 2Dec 5Dec 10Dec 17
20°FNov 21Nov 28Dec 2Dec 7Dec 11Dec 17Dec 23Dec 31Jan 8
16°FDec 3Dec 10Dec 16Dec 22Dec 28Jan 3Jan 10Jan 19Feb 4

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°F220213208204199195190184177
32°F245235228223218214209202194
28°F271261254249243238233226217
24°F298287280275270264258251240
20°F335322314307300293286278268
16°F365361350341334326317308297

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
84% 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
2,719
Cooling degree days, base 65°F
2,281
Growing degree days, base 40°F
8,885
Growing degree days, base 45°F
7,278
Growing degree days, base 50°F
5,801
Growing degree days, base 55°F
4,474
Growing degree days, base 60°F
3,297

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January652148
February488490
March33118218
April13382412
May29244681
June0430880
July05441,009
August0528993
September8310751
October108107474
November35112183
December619160

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 13.3 km from Clyde. 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 USC00410013 (Abilene 6ESE). Public domain.