Trego County climate

Trego County Frost Dates and Growing Season

NOAA 1991-2020 normals for Wakeeney, 11.2 km from Trego County, elevation 2445 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Wakeeney. 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 23 and the first fall freeze around October 18, a growing season of about 175 days.

Median at 36°F
last May 3, first October 9
Median at 32°F
last April 23, first October 18
Median at 28°F
last April 13, first October 27

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°FMay 16May 10May 7May 5May 3May 1Apr 29Apr 24Apr 19
32°FMay 7May 2Apr 30Apr 26Apr 23Apr 20Apr 17Apr 14Apr 9
28°FApr 29Apr 24Apr 20Apr 17Apr 13Apr 10Apr 7Apr 3Mar 30
24°FApr 20Apr 14Apr 10Apr 7Apr 4Apr 1Mar 29Mar 23Mar 17
20°FApr 11Apr 5Apr 1Mar 29Mar 24Mar 20Mar 16Mar 10Mar 5
16°FApr 3Mar 28Mar 22Mar 17Mar 11Mar 8Mar 4Feb 28Feb 22

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 25Sep 30Oct 3Oct 6Oct 9Oct 12Oct 14Oct 16Oct 20
32°FOct 2Oct 8Oct 12Oct 15Oct 18Oct 20Oct 23Oct 25Oct 30
28°FOct 13Oct 18Oct 21Oct 24Oct 27Oct 30Nov 1Nov 4Nov 9
24°FOct 21Oct 26Oct 30Nov 1Nov 4Nov 7Nov 10Nov 14Nov 19
20°FOct 28Nov 2Nov 6Nov 9Nov 13Nov 16Nov 19Nov 24Nov 29
16°FNov 3Nov 9Nov 14Nov 17Nov 22Nov 25Nov 29Dec 4Dec 10

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°F175169165161158154150145137
32°F196189184180175172167162153
28°F215208203199195191186181175
24°F236227222218214209204199192
20°F257249242237232227221215208
16°F279271264258252247241235225

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
5,380
Cooling degree days, base 65°F
1,374
Growing degree days, base 40°F
6,248
Growing degree days, base 45°F
4,997
Growing degree days, base 50°F
3,892
Growing degree days, base 55°F
2,920
Growing degree days, base 60°F
2,083

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,09001
February89308
March686155
April39911157
May15582405
June16284719
July2442905
August3367829
September67164551
October33722220
November698041
December1,03502

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 11.2 km from Trego County. 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 USC00148495 (Wakeeney). Public domain.