Wyldwood climate

Wyldwood Frost Dates and Growing Season

NOAA 1991-2020 normals for Cedar Creek 5 S, 12.5 km from Wyldwood, elevation 436 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Cedar Creek 5 S. 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 14 and the first fall freeze around November 19, a growing season of about 250 days.

Median at 36°F
last March 26, first November 6
Median at 32°F
last March 14, first November 19
Median at 28°F
last March 2, first December 1

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 13Apr 6Apr 2Mar 30Mar 26Mar 22Mar 18Mar 13Mar 6
32°FApr 3Mar 27Mar 22Mar 18Mar 14Mar 9Mar 5Mar 1Feb 22
28°FMar 22Mar 16Mar 11Mar 6Mar 2Feb 27Feb 19Feb 9Jan 29
24°FMar 14Mar 6Mar 1Feb 21Feb 10Feb 1Jan 26Jan 19Jan 7
20°FMar 7Feb 25Feb 10Jan 30Jan 22Jan 15Jan 9Jan 2Dec 22
16°FMar 1Feb 9Jan 24Jan 20Jan 13Jan 8Jan 5Jan 1Dec 19

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 23Oct 28Nov 1Nov 3Nov 6Nov 9Nov 14Nov 19Nov 27
32°FOct 31Nov 6Nov 10Nov 15Nov 19Nov 23Nov 28Dec 2Dec 8
28°FNov 10Nov 17Nov 22Nov 27Dec 1Dec 5Dec 10Dec 19Dec 31
24°FNov 22Dec 1Dec 5Dec 11Dec 21Dec 29Jan 3Jan 10Jan 20
20°FDec 4Dec 15Dec 26Jan 1Jan 4Jan 9Jan 17Jan 30Feb 21
16°FDec 16Dec 29Jan 1Jan 4Jan 7Jan 15Jan 20Feb 3Feb 28

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°F252243236231226222216210202
32°F279267262255250245239232222
28°F315302292282275268261253245
24°F349337329319309302294285271
20°F365365365365357345335320303
16°F365365365365365365365365350

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
96% of years
20°F or colder
64% of years
16°F or colder
21% 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
1,807
Cooling degree days, base 65°F
2,843
Growing degree days, base 40°F
10,207
Growing degree days, base 45°F
8,471
Growing degree days, base 50°F
6,844
Growing degree days, base 55°F
5,351
Growing degree days, base 60°F
4,016

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January4867111
February33514164
March20644324
April71128509
May8306763
June0492942
July05891,054
August06151,080
September1415864
October45175596
November22044297
December43514142

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 12.5 km from Wyldwood. 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 USC00411541 (Cedar Creek 5 S). Public domain.