Linton climate

Linton Frost Dates and Growing Season

NOAA 1991-2020 normals for Linton, 0.2 km from Linton, elevation 1690 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Linton. 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 May 12 and the first fall freeze around September 29, a growing season of about 138 days.

Median at 36°F
last May 20, first September 20
Median at 32°F
last May 12, first September 29
Median at 28°F
last May 3, first October 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°FJun 4May 31May 26May 24May 20May 17May 14May 11May 7
32°FMay 26May 22May 17May 14May 12May 9May 6May 3Apr 29
28°FMay 17May 13May 9May 5May 3May 1Apr 28Apr 25Apr 20
24°FMay 9May 4May 1Apr 28Apr 26Apr 23Apr 19Apr 16Apr 12
20°FMay 1Apr 26Apr 22Apr 19Apr 16Apr 14Apr 10Apr 8Apr 3
16°FApr 22Apr 17Apr 13Apr 10Apr 7Apr 5Apr 2Mar 30Mar 22

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 6Sep 11Sep 15Sep 17Sep 20Sep 22Sep 25Sep 28Oct 2
32°FSep 15Sep 20Sep 23Sep 26Sep 29Oct 1Oct 4Oct 7Oct 12
28°FSep 21Sep 27Oct 1Oct 3Oct 5Oct 8Oct 12Oct 16Oct 20
24°FSep 29Oct 3Oct 7Oct 11Oct 14Oct 18Oct 21Oct 25Oct 29
20°FOct 6Oct 13Oct 17Oct 21Oct 24Oct 27Oct 30Nov 2Nov 6
16°FOct 16Oct 22Oct 26Oct 29Nov 1Nov 3Nov 6Nov 9Nov 14

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°F139132128123119116111107100
32°F156151147142138135130125119
28°F173167162158154150145141134
24°F191184180175171166162156149
20°F210203198193189185181175167
16°F226218213210206202198193186

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
8,602
Cooling degree days, base 65°F
609
Growing degree days, base 40°F
4,249
Growing degree days, base 45°F
3,288
Growing degree days, base 50°F
2,441
Growing degree days, base 55°F
1,709
Growing degree days, base 60°F
1,094

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,66300
February1,36500
March1,10402
April671139
May30125236
June72114493
July17228676
August35189619
September20551315
October633260
November1,06302
December1,47200

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 0.2 km from Linton. 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 USC00325210 (Linton). Public domain.