Burke climate

Burke Frost Dates and Growing Season

NOAA 1991-2020 normals for Lufkin Angelina CO AP, 1.4 km from Burke, elevation 288 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Lufkin Angelina CO 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 11 and the first fall freeze around November 15, a growing season of about 247 days.

Median at 36°F
last March 28, first November 4
Median at 32°F
last March 11, first November 15
Median at 28°F
last February 25, first November 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°FApr 16Apr 9Apr 5Apr 2Mar 28Mar 23Mar 18Mar 12Mar 4
32°FApr 4Mar 28Mar 22Mar 16Mar 11Mar 6Mar 2Feb 26Feb 17
28°FMar 17Mar 10Mar 5Mar 1Feb 25Feb 19Feb 11Feb 3Jan 27
24°FMar 6Feb 27Feb 18Feb 9Feb 2Jan 29Jan 22Jan 14Dec 31
20°FFeb 23Feb 8Jan 31Jan 26Jan 18Jan 12Jan 6Dec 31Dec 19
16°FFeb 6Jan 29Jan 22Jan 16Jan 11Jan 6Jan 4Jan 1Dec 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 22Oct 26Oct 30Nov 1Nov 4Nov 7Nov 11Nov 14Nov 20
32°FOct 30Nov 3Nov 7Nov 11Nov 15Nov 19Nov 23Nov 29Dec 4
28°FNov 6Nov 13Nov 19Nov 23Nov 28Dec 2Dec 7Dec 15Dec 27
24°FNov 22Nov 29Dec 4Dec 10Dec 21Dec 28Jan 3Jan 9Jan 21
20°FDec 4Dec 14Dec 25Dec 31Jan 3Jan 6Jan 11Jan 20Feb 4
16°FDec 18Dec 29Jan 1Jan 3Jan 6Jan 11Jan 17Jan 25Feb 2

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°F249240232226221217211205196
32°F276267260254247242236229219
28°F316303292284278271264256245
24°F358343334327319311302291277
20°F365365365365359350341334320
16°F365365365365365365365364349

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
93% of years
20°F or colder
59% of years
16°F or colder
20% 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
1,973
Cooling degree days, base 65°F
2,524
Growing degree days, base 40°F
9,727
Growing degree days, base 45°F
8,014
Growing degree days, base 50°F
6,418
Growing degree days, base 55°F
4,961
Growing degree days, base 60°F
3,659

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January513699
February35412149
March21339312
April77107482
May7279736
June0446895
July05421,007
August05391,004
September2371819
October68142542
November26930249
December47011123

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 1.4 km from Burke. 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 USW00093987 (Lufkin Angelina CO AP). Public domain.