Byesville climate

Byesville Frost Dates and Growing Season

NOAA 1991-2020 normals for Cambridge, 5.9 km from Byesville, elevation 800 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Cambridge. 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 28 and the first fall freeze around October 17, a growing season of about 172 days.

Median at 36°F
last May 10, first October 6
Median at 32°F
last April 28, first October 17
Median at 28°F
last April 15, first October 28

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 25May 20May 17May 13May 10May 5May 1Apr 28Apr 24
32°FMay 15May 9May 4May 1Apr 28Apr 24Apr 21Apr 17Apr 13
28°FApr 30Apr 24Apr 21Apr 17Apr 15Apr 12Apr 9Apr 5Mar 31
24°FApr 17Apr 12Apr 8Apr 5Apr 3Apr 1Mar 30Mar 25Mar 19
20°FApr 6Apr 1Mar 30Mar 26Mar 23Mar 20Mar 16Mar 12Mar 6
16°FMar 29Mar 23Mar 19Mar 15Mar 11Mar 8Mar 5Feb 28Feb 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 23Sep 28Oct 1Oct 4Oct 6Oct 8Oct 11Oct 13Oct 17
32°FOct 3Oct 7Oct 11Oct 14Oct 17Oct 19Oct 22Oct 24Oct 28
28°FOct 14Oct 19Oct 22Oct 25Oct 28Oct 31Nov 2Nov 5Nov 9
24°FOct 26Oct 31Nov 2Nov 5Nov 7Nov 10Nov 14Nov 17Nov 23
20°FNov 4Nov 8Nov 12Nov 16Nov 19Nov 22Nov 27Dec 1Dec 5
16°FNov 12Nov 19Nov 24Nov 28Dec 2Dec 5Dec 10Dec 15Dec 23

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°F170163158155150146141136128
32°F192185181176172168163157151
28°F214208204199196192188183177
24°F239231226223219215211206200
20°F266258251247242237231226219
16°F292282275270265260255249240

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
5,324
Cooling degree days, base 65°F
883
Growing degree days, base 40°F
5,733
Growing degree days, base 45°F
4,484
Growing degree days, base 50°F
3,372
Growing degree days, base 55°F
2,399
Growing degree days, base 60°F
1,564

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,10205
February91106
March728146
April36612173
May14369397
June22180608
July2278741
August5236696
September7597474
October34812182
November663038
December95908

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 5.9 km from Byesville. 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 USC00331197 (Cambridge). Public domain.