Atoka climate

Atoka Frost Dates and Growing Season

NOAA 1991-2020 normals for Atoka, 1.8 km from Atoka, elevation 565 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Atoka. 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 5 and the first fall freeze around November 1, a growing season of about 211 days.

Median at 36°F
last April 14, first October 25
Median at 32°F
last April 5, first November 1
Median at 28°F
last March 22, 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 21Apr 18Apr 14Apr 11Apr 8Apr 4Mar 29
32°FApr 22Apr 16Apr 11Apr 7Apr 5Apr 1Mar 29Mar 24Mar 17
28°FApr 8Apr 3Mar 31Mar 26Mar 22Mar 18Mar 14Mar 10Mar 4
24°FMar 27Mar 20Mar 16Mar 12Mar 9Mar 6Mar 3Feb 28Feb 22
20°FMar 14Mar 10Mar 6Mar 3Feb 28Feb 24Feb 18Feb 10Jan 31
16°FMar 5Feb 28Feb 23Feb 15Feb 9Feb 4Jan 30Jan 24Jan 12

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 12Oct 17Oct 20Oct 23Oct 25Oct 29Oct 31Nov 3Nov 7
32°FOct 18Oct 24Oct 28Oct 31Nov 1Nov 4Nov 6Nov 10Nov 15
28°FOct 26Nov 1Nov 3Nov 6Nov 10Nov 13Nov 17Nov 22Nov 29
24°FNov 2Nov 8Nov 13Nov 17Nov 21Nov 27Dec 1Dec 5Dec 10
20°FNov 11Nov 19Nov 26Dec 1Dec 4Dec 8Dec 13Dec 18Dec 25
16°FNov 25Dec 2Dec 7Dec 14Dec 20Dec 27Jan 1Jan 5Jan 15

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°F215207202198193188184180172
32°F235226220216211207202196189
28°F259250244239234230225218210
24°F282274268262257252246239230
20°F310300292286281275270261252
16°F342332324316309303297289277

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
98% 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
3,328
Cooling degree days, base 65°F
2,053
Growing degree days, base 40°F
8,192
Growing degree days, base 45°F
6,673
Growing degree days, base 50°F
5,294
Growing degree days, base 55°F
4,064
Growing degree days, base 60°F
2,982

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January796125
February593255
March40310164
April18445329
May40168594
June0384834
July05381,003
August0527992
September11294733
October15278402
November4376126
December712138

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 1.8 km from Atoka. 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 USC00340391 (Atoka). Public domain.