Kenton climate

Kenton Frost Dates and Growing Season

NOAA 1991-2020 normals for Kenton, 0.4 km from Kenton, elevation 997 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Kenton. 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 22 and the first fall freeze around October 24, a growing season of about 182 days.

Median at 36°F
last May 3, first October 12
Median at 32°F
last April 22, first October 24
Median at 28°F
last April 10, first November 3

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 18May 12May 9May 6May 3May 1Apr 28Apr 23Apr 19
32°FMay 7May 2Apr 29Apr 25Apr 22Apr 19Apr 16Apr 13Apr 9
28°FApr 26Apr 20Apr 17Apr 14Apr 10Apr 7Apr 4Apr 1Mar 28
24°FApr 14Apr 8Apr 4Apr 2Mar 31Mar 29Mar 25Mar 21Mar 17
20°FApr 5Mar 31Mar 29Mar 25Mar 22Mar 19Mar 15Mar 11Mar 5
16°FMar 29Mar 23Mar 18Mar 15Mar 12Mar 9Mar 6Feb 28Feb 23

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°FSep 28Oct 3Oct 6Oct 9Oct 12Oct 14Oct 17Oct 20Oct 25
32°FOct 9Oct 15Oct 18Oct 20Oct 24Oct 26Oct 30Nov 1Nov 6
28°FOct 21Oct 26Oct 30Nov 1Nov 3Nov 6Nov 9Nov 12Nov 17
24°FNov 2Nov 5Nov 8Nov 10Nov 14Nov 17Nov 22Nov 27Dec 2
20°FNov 7Nov 12Nov 16Nov 21Nov 26Nov 30Dec 3Dec 7Dec 14
16°FNov 15Nov 22Nov 28Dec 1Dec 6Dec 10Dec 14Dec 20Dec 26

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°F180173168164160156152147140
32°F201195189185182178174168161
28°F225219214210206202198192185
24°F251243237233228225220216210
20°F273266259254249243238233225
16°F295287280275270265260252242

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
6,028
Cooling degree days, base 65°F
888
Growing degree days, base 40°F
5,426
Growing degree days, base 45°F
4,256
Growing degree days, base 50°F
3,219
Growing degree days, base 55°F
2,310
Growing degree days, base 60°F
1,530

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,22401
February1,02503
March841128
April4709120
May18961349
June29194615
July3282744
August7232690
September8597465
October38114169
November714032
December1,06004

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 0.4 km from Kenton. 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 USC00334189 (Kenton). Public domain.