Kleberg County climate

Kleberg County Frost Dates and Growing Season

NOAA 1991-2020 normals for Kingsville Naas, 16.8 km from Kleberg County, elevation 56 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Kingsville Naas. 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 February 3 and the first fall freeze around December 14, a growing season of about 314 days.

Median at 36°F
last February 22, first November 29
Median at 32°F
last February 3, first December 14
Median at 28°F
last January 14, first December 28

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°FMar 15Mar 9Mar 4Feb 28Feb 22Feb 17Feb 11Feb 4Jan 26
32°FMar 6Feb 26Feb 18Feb 10Feb 3Jan 29Jan 22Jan 10Dec 27
28°FFeb 28Feb 14Feb 2Jan 25Jan 14Jan 6Dec 31Dec 22Dec 11
24°FFeb 14Jan 28Jan 17Jan 9Jan 4Dec 30Dec 26Dec 19Dec 10
20°F–––––––––
16°F–––––––––

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°FNov 10Nov 16Nov 20Nov 25Nov 29Dec 3Dec 8Dec 15Dec 26
32°FNov 21Nov 29Dec 4Dec 8Dec 14Dec 22Dec 29Jan 6Jan 22
28°FDec 2Dec 8Dec 13Dec 21Dec 28Jan 2Jan 9Jan 17Feb 8
24°FDec 9Dec 15Dec 20Dec 28Jan 1Jan 5Jan 11Jan 21Feb 9
20°F–––––––––
16°F–––––––––

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°F317303293286281273266260251
32°F353340331322314307298288276
28°F365365365365355345338329310
24°F365365365365365365365364348
20°F365365365365365365365365365
16°F365365365365365365365365365

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
93% of years
28°F or colder
58% of years
24°F or colder
21% of years
20°F or colder
4% of years
16°F or colder
0% 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
837
Cooling degree days, base 65°F
3,891
Growing degree days, base 40°F
12,184
Growing degree days, base 45°F
10,376
Growing degree days, base 50°F
8,603
Growing degree days, base 55°F
6,910
Growing degree days, base 60°F
5,333

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January26236270
February15164345
March71146543
April12279717
May0458922
June05791,029
July06421,107
August06621,127
September0515965
October12328781
November99128484
December22956314

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 16.8 km from Kleberg County. 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 USW00012928 (Kingsville Naas). Public domain.