Bushyhead climate

Bushyhead Frost Dates and Growing Season

NOAA 1991-2020 normals for Claremore 2 Ene, 17.3 km from Bushyhead, elevation 588 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Claremore 2 Ene. 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 7 and the first fall freeze around October 30, a growing season of about 205 days.

Median at 36°F
last April 18, first October 21
Median at 32°F
last April 7, first October 30
Median at 28°F
last March 25, first November 8

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 2Apr 29Apr 25Apr 21Apr 18Apr 15Apr 11Apr 7Apr 1
32°FApr 24Apr 18Apr 14Apr 10Apr 7Apr 3Mar 31Mar 27Mar 20
28°FApr 11Apr 5Apr 2Mar 30Mar 25Mar 20Mar 17Mar 13Mar 6
24°FMar 31Mar 24Mar 18Mar 14Mar 11Mar 7Mar 3Feb 28Feb 23
20°FMar 16Mar 11Mar 6Mar 3Feb 28Feb 25Feb 21Feb 15Feb 6
16°FMar 9Mar 3Feb 28Feb 24Feb 18Feb 14Feb 7Jan 31Jan 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 5Oct 10Oct 14Oct 18Oct 21Oct 23Oct 26Oct 29Nov 3
32°FOct 15Oct 20Oct 24Oct 28Oct 30Nov 1Nov 4Nov 8Nov 13
28°FOct 25Oct 31Nov 1Nov 4Nov 8Nov 11Nov 15Nov 20Nov 26
24°FNov 2Nov 6Nov 11Nov 15Nov 18Nov 23Nov 29Dec 2Dec 8
20°FNov 12Nov 18Nov 23Nov 28Dec 1Dec 3Dec 7Dec 13Dec 19
16°FNov 24Nov 30Dec 4Dec 9Dec 14Dec 19Dec 25Jan 1Jan 8

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°F205198192188184180175170163
32°F229221216210205201195190182
28°F254245238233227222217211203
24°F277269264258252247242236225
20°F303294287280275270264257249
16°F331318311305298292284275267

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
3,939
Cooling degree days, base 65°F
1,782
Growing degree days, base 40°F
7,496
Growing degree days, base 45°F
6,064
Growing degree days, base 50°F
4,778
Growing degree days, base 55°F
3,636
Growing degree days, base 60°F
2,637

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January907012
February691128
March4997118
April23931273
May67138537
June2344792
July0494959
August0468933
September25238663
October20054340
November5045100
December805123

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 17.3 km from Bushyhead. 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 USC00341828 (Claremore 2 Ene). Public domain.