Cherry Tree climate

Cherry Tree Frost Dates and Growing Season

NOAA 1991-2020 normals for Stilwell 5 Nnw, 17.1 km from Cherry Tree, elevation 1000 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Stilwell 5 Nnw. 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 31 and the first fall freeze around November 4, a growing season of about 217 days.

Median at 36°F
last April 16, first October 24
Median at 32°F
last March 31, first November 4
Median at 28°F
last March 17, first November 14

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 28Apr 24Apr 20Apr 16Apr 12Apr 8Apr 3Mar 29
32°FApr 20Apr 13Apr 8Apr 3Mar 31Mar 28Mar 23Mar 17Mar 10
28°FApr 6Mar 31Mar 27Mar 21Mar 17Mar 13Mar 8Mar 3Feb 25
24°FMar 25Mar 17Mar 12Mar 8Mar 4Feb 28Feb 23Feb 16Feb 7
20°FMar 15Mar 7Mar 3Feb 26Feb 19Feb 12Feb 6Jan 31Jan 23
16°FMar 6Feb 26Feb 15Feb 8Feb 1Jan 29Jan 23Jan 16Jan 5

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 8Oct 16Oct 19Oct 22Oct 24Oct 26Oct 29Nov 1Nov 6
32°FOct 21Oct 26Oct 30Nov 1Nov 4Nov 7Nov 11Nov 15Nov 19
28°FOct 26Nov 2Nov 6Nov 10Nov 14Nov 17Nov 21Nov 26Dec 1
24°FNov 7Nov 14Nov 19Nov 25Nov 28Dec 1Dec 4Dec 8Dec 17
20°FNov 17Nov 27Dec 1Dec 5Dec 10Dec 16Dec 21Dec 28Jan 4
16°FDec 1Dec 7Dec 14Dec 20Dec 26Dec 31Jan 4Jan 11Jan 20

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°F214206201196190186180175167
32°F241231225221217212208202192
28°F268259252247241235229222213
24°F296286279273268262255248239
20°F327316307301293286279271258
16°F355342334327319311304295285

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
94% 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
3,629
Cooling degree days, base 65°F
1,506
Growing degree days, base 40°F
7,393
Growing degree days, base 45°F
5,912
Growing degree days, base 50°F
4,577
Growing degree days, base 55°F
3,394
Growing degree days, base 60°F
2,368

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January845013
February620032
March4686125
April20630291
May60102507
June3285732
July0432897
August0408872
September22197625
October17941342
November4534116
December774025

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 17.1 km from Cherry Tree. 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 USC00348506 (Stilwell 5 Nnw). Public domain.