Enid climate

Enid Frost Dates and Growing Season

NOAA 1991-2020 normals for Enid, 2.6 km from Enid, elevation 1245 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Enid. 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 6 and the first fall freeze around November 1, a growing season of about 209 days.

Median at 36°F
last April 16, first October 24
Median at 32°F
last April 6, first November 1
Median at 28°F
last March 26, first November 10

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 30Apr 26Apr 23Apr 20Apr 16Apr 13Apr 10Apr 6Apr 2
32°FApr 21Apr 17Apr 12Apr 9Apr 6Apr 2Mar 31Mar 26Mar 20
28°FApr 12Apr 7Apr 3Mar 31Mar 26Mar 22Mar 16Mar 11Mar 5
24°FApr 1Mar 26Mar 20Mar 15Mar 10Mar 6Mar 3Feb 28Feb 24
20°FMar 19Mar 12Mar 7Mar 3Mar 1Feb 27Feb 23Feb 18Feb 9
16°FMar 11Mar 4Feb 28Feb 25Feb 21Feb 16Feb 10Feb 2Jan 25

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

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°F210203199194190186182177171
32°F232223218213209205201196189
28°F256247240234230224220214207
24°F278270263258253248243236227
20°F302294287280275269263258248
16°F328318310304298292285278269

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
3,976
Cooling degree days, base 65°F
2,022
Growing degree days, base 40°F
7,739
Growing degree days, base 45°F
6,309
Growing degree days, base 50°F
5,025
Growing degree days, base 55°F
3,885
Growing degree days, base 60°F
2,887

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January90808
February707026
March5026119
April24131273
May59166573
June2398846
July05671,032
August0515980
September22276704
October18961358
November510395
December835013

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 2.6 km from Enid. 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 USC00342912 (Enid). Public domain.