Bond County climate

Bond County Frost Dates and Growing Season

NOAA 1991-2020 normals for Carlyle Rsvr, 29.8 km from Bond County, elevation 501 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Carlyle Rsvr. 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 6 and the first fall freeze around October 29, a growing season of about 204 days.

Median at 36°F
last April 17, first October 19
Median at 32°F
last April 6, first October 29
Median at 28°F
last March 28, first November 8

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 30Apr 27Apr 23Apr 20Apr 17Apr 14Apr 11Apr 8Apr 3
32°FApr 22Apr 17Apr 13Apr 9Apr 6Apr 4Apr 1Mar 29Mar 23
28°FApr 13Apr 7Apr 3Mar 31Mar 28Mar 24Mar 20Mar 15Mar 10
24°FApr 1Mar 28Mar 23Mar 18Mar 15Mar 12Mar 9Mar 5Feb 28
20°FMar 22Mar 17Mar 13Mar 10Mar 7Mar 4Feb 28Feb 23Feb 15
16°FMar 16Mar 10Mar 6Mar 2Feb 28Feb 22Feb 16Feb 11Feb 4

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 10Oct 14Oct 16Oct 19Oct 21Oct 24Oct 27Oct 31
32°FOct 16Oct 21Oct 24Oct 27Oct 29Oct 31Nov 3Nov 6Nov 12
28°FOct 28Nov 1Nov 3Nov 5Nov 8Nov 12Nov 15Nov 19Nov 26
24°FNov 5Nov 9Nov 13Nov 16Nov 18Nov 23Nov 28Dec 1Dec 8
20°FNov 11Nov 18Nov 23Nov 26Dec 1Dec 4Dec 8Dec 13Dec 19
16°FNov 23Nov 29Dec 4Dec 7Dec 12Dec 15Dec 20Dec 25Jan 1

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°F203197193188184180176171164
32°F227218214209204200196191185
28°F249241236231226222217212204
24°F275266259254249243239233225
20°F294286280274269265259253244
16°F316307300294289284277271262

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
4,780
Cooling degree days, base 65°F
1,438
Growing degree days, base 40°F
6,686
Growing degree days, base 45°F
5,365
Growing degree days, base 50°F
4,186
Growing degree days, base 55°F
3,139
Growing degree days, base 60°F
2,222

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,07505
February844012
March634468
April30222223
May90117495
June7302745
July0409874
August1367831
September41177587
October25838275
November593263
December93608

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 29.8 km from Bond County. 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 USC00111290 (Carlyle Rsvr). Public domain.