Campton climate

Campton Frost Dates and Growing Season

NOAA 1991-2020 normals for Beattyville 4N, 18.6 km from Campton, elevation 1080 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Beattyville 4N. 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 12 and the first fall freeze around October 25, a growing season of about 192 days.

Median at 36°F
last April 28, first October 16
Median at 32°F
last April 12, first October 25
Median at 28°F
last March 31, first November 5

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

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 5Oct 9Oct 12Oct 14Oct 16Oct 18Oct 21Oct 23Oct 26
32°FOct 13Oct 17Oct 20Oct 23Oct 25Oct 27Oct 30Nov 2Nov 7
28°FOct 23Oct 28Oct 31Nov 2Nov 5Nov 7Nov 11Nov 15Nov 20
24°FNov 3Nov 7Nov 10Nov 13Nov 17Nov 20Nov 25Nov 30Dec 6
20°FNov 11Nov 16Nov 21Nov 26Dec 1Dec 3Dec 9Dec 15Dec 23
16°FNov 23Dec 1Dec 5Dec 11Dec 15Dec 21Dec 26Dec 30Jan 6

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°F191184179174170165161155149
32°F214206202197192188183176167
28°F242233227222218214209203194
24°F271262256250245240235230222
20°F298288280274269262257250242
16°F326316307301295289283274266

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
4,557
Cooling degree days, base 65°F
1,052
Growing degree days, base 40°F
6,360
Growing degree days, base 45°F
5,001
Growing degree days, base 50°F
3,788
Growing degree days, base 55°F
2,728
Growing degree days, base 60°F
1,815

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January984012
February777022
March608479
April29224236
May12281431
June11203642
July1299763
August3275738
September51142542
October28422239
November570166
December854019

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 18.6 km from Campton. 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 USC00150483 (Beattyville 4N). Public domain.