Kyle climate

Kyle Frost Dates and Growing Season

NOAA 1991-2020 normals for Kyle 2 E, 3.2 km from Kyle, elevation 2958 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Kyle 2 E. 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 May 11 and the first fall freeze around October 1, a growing season of about 139 days.

Median at 36°F
last May 21, first September 21
Median at 32°F
last May 11, first October 1
Median at 28°F
last May 1, first October 9

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°FJun 6May 31May 28May 24May 21May 18May 15May 12May 8
32°FMay 27May 22May 17May 13May 11May 8May 6May 3Apr 29
28°FMay 17May 11May 6May 4May 1Apr 30Apr 27Apr 23Apr 17
24°FMay 6May 2Apr 30Apr 27Apr 23Apr 20Apr 16Apr 12Apr 8
20°FApr 30Apr 24Apr 19Apr 16Apr 12Apr 9Apr 6Apr 2Mar 29
16°FApr 21Apr 14Apr 10Apr 7Apr 4Apr 1Mar 28Mar 23Mar 17

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°FSep 5Sep 11Sep 15Sep 19Sep 21Sep 24Sep 28Oct 1Oct 5
32°FSep 15Sep 21Sep 25Sep 28Oct 1Oct 4Oct 6Oct 9Oct 12
28°FSep 25Sep 30Oct 4Oct 7Oct 9Oct 12Oct 15Oct 18Oct 22
24°FOct 5Oct 10Oct 13Oct 16Oct 19Oct 21Oct 23Oct 26Oct 30
20°FOct 12Oct 18Oct 21Oct 23Oct 26Oct 28Oct 31Nov 3Nov 8
16°FOct 19Oct 24Oct 28Oct 31Nov 2Nov 5Nov 9Nov 12Nov 18

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°F14013513012512111711210698
32°F158153148143139135132127119
28°F177171167163159155151145138
24°F196190185181177173169165158
20°F215208203198194191187181174
16°F231225219215211207202197189

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
100% 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
7,117
Cooling degree days, base 65°F
706
Growing degree days, base 40°F
4,709
Growing degree days, base 45°F
3,640
Growing degree days, base 50°F
2,704
Growing degree days, base 55°F
1,910
Growing degree days, base 60°F
1,247

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,27700
February1,08902
March902020
April613158
May31524230
June73104484
July7259717
August22239682
September15075389
October5234111
November905011
December1,24100

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 3.2 km from Kyle. 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 USC00394630 (Kyle 2 E). Public domain.