Tekonsha climate

Tekonsha Frost Dates and Growing Season

NOAA 1991-2020 normals for Coldwater St School, 14.6 km from Tekonsha, elevation 984 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Coldwater St School. 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 2 and the first fall freeze around October 13, a growing season of about 163 days.

Median at 36°F
last May 14, first October 2
Median at 32°F
last May 2, first October 13
Median at 28°F
last April 21, 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 29May 25May 20May 17May 14May 10May 7May 3Apr 29
32°FMay 18May 13May 9May 5May 2Apr 30Apr 27Apr 23Apr 18
28°FMay 8May 1Apr 28Apr 24Apr 21Apr 18Apr 15Apr 11Apr 6
24°FApr 24Apr 20Apr 16Apr 12Apr 9Apr 6Apr 3Apr 1Mar 28
20°FApr 14Apr 7Apr 4Apr 2Mar 31Mar 28Mar 25Mar 21Mar 16
16°FApr 3Mar 31Mar 27Mar 23Mar 21Mar 18Mar 15Mar 11Mar 5

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 19Sep 23Sep 27Sep 30Oct 2Oct 4Oct 7Oct 10Oct 15
32°FSep 30Oct 4Oct 6Oct 10Oct 13Oct 17Oct 19Oct 23Oct 30
28°FOct 12Oct 17Oct 21Oct 24Oct 28Oct 31Nov 2Nov 5Nov 9
24°FOct 27Nov 1Nov 3Nov 5Nov 7Nov 10Nov 13Nov 17Nov 23
20°FNov 5Nov 9Nov 12Nov 15Nov 18Nov 22Nov 26Nov 30Dec 5
16°FNov 12Nov 18Nov 23Nov 26Nov 29Dec 1Dec 6Dec 10Dec 18

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°F161153149144141137132127120
32°F182176171167163158153149142
28°F209202196191187183178174165
24°F232226221216213209205200194
20°F256249244239236231226221215
16°F279270264259255250246241234

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
6,704
Cooling degree days, base 65°F
567
Growing degree days, base 40°F
4,694
Growing degree days, base 45°F
3,600
Growing degree days, base 50°F
2,638
Growing degree days, base 55°F
1,809
Growing degree days, base 60°F
1,112

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,28900
February1,09501
March921117
April543375
May24637278
June49127528
July12195648
August24145586
September14654365
October4576119
November794019
December1,12802

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 14.6 km from Tekonsha. 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 USC00201675 (Coldwater St School). Public domain.