Avon Center climate

Avon Center Frost Dates and Growing Season

NOAA 1991-2020 normals for Elyria 3 E, 9.2 km from Avon Center, elevation 730 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Elyria 3 E. 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 22 and the first fall freeze around November 1, a growing season of about 192 days.

Median at 36°F
last May 2, first October 18
Median at 32°F
last April 22, first November 1
Median at 28°F
last April 9, first November 10

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

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 4Oct 8Oct 12Oct 15Oct 18Oct 21Oct 24Oct 27Nov 1
32°FOct 17Oct 23Oct 27Oct 31Nov 1Nov 3Nov 5Nov 8Nov 12
28°FNov 1Nov 3Nov 6Nov 8Nov 10Nov 13Nov 16Nov 19Nov 24
24°FNov 7Nov 11Nov 15Nov 17Nov 20Nov 23Nov 27Dec 1Dec 9
20°FNov 16Nov 22Nov 26Nov 29Dec 2Dec 6Dec 11Dec 16Dec 22
16°FNov 24Dec 1Dec 5Dec 10Dec 15Dec 19Dec 23Dec 29Jan 5

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°F189181176172168164159154147
32°F213205200195192188183178171
28°F238230224219215211208203196
24°F260252247242237231226221215
20°F283275269264259254249244235
16°F304296290285279274270264256

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
5,436
Cooling degree days, base 65°F
963
Growing degree days, base 40°F
5,740
Growing degree days, base 45°F
4,510
Growing degree days, base 50°F
3,420
Growing degree days, base 55°F
2,466
Growing degree days, base 60°F
1,646

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,11902
February94604
March790339
April42414143
May16170379
June27195618
July1305769
August3250711
September62110499
October31317206
November632144
December95807

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 9.2 km from Avon Center. 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 USC00332599 (Elyria 3 E). Public domain.