Eden climate

Eden Frost Dates and Growing Season

NOAA 1991-2020 normals for Fond Du Lac Wwtp, 13.5 km from Eden, elevation 750 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Fond Du Lac Wwtp. 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 1 and the first fall freeze around October 12, a growing season of about 162 days.

Median at 36°F
last May 12, first October 2
Median at 32°F
last May 1, first October 12
Median at 28°F
last April 20, first October 24

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 28May 23May 19May 15May 12May 8May 6May 3Apr 29
32°FMay 17May 12May 8May 5May 1Apr 29Apr 26Apr 22Apr 18
28°FMay 5Apr 30Apr 27Apr 23Apr 20Apr 17Apr 14Apr 11Apr 5
24°FApr 21Apr 18Apr 14Apr 11Apr 8Apr 5Apr 3Apr 1Mar 26
20°FApr 12Apr 7Apr 4Apr 2Apr 1Mar 29Mar 25Mar 21Mar 17
16°FApr 4Mar 31Mar 28Mar 25Mar 22Mar 19Mar 16Mar 13Mar 9

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 21Sep 25Sep 28Sep 30Oct 2Oct 4Oct 7Oct 10Oct 15
32°FSep 28Oct 2Oct 6Oct 9Oct 12Oct 15Oct 17Oct 21Oct 25
28°FOct 5Oct 12Oct 16Oct 20Oct 24Oct 26Oct 29Oct 31Nov 4
24°FOct 18Oct 25Oct 29Nov 1Nov 2Nov 5Nov 8Nov 11Nov 17
20°FNov 1Nov 4Nov 7Nov 10Nov 13Nov 15Nov 18Nov 21Nov 26
16°FNov 7Nov 12Nov 16Nov 19Nov 21Nov 24Nov 26Nov 30Dec 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°F161154150145142138134130123
32°F182176171166162159155150144
28°F205198193189185181177171164
24°F226220215210207203200194187
20°F245239234230227223218213207
16°F263256252248244239236232225

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
7,758
Cooling degree days, base 65°F
492
Growing degree days, base 40°F
4,273
Growing degree days, base 45°F
3,269
Growing degree days, base 50°F
2,384
Growing degree days, base 55°F
1,622
Growing degree days, base 60°F
983

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,48900
February1,25600
March1,051010
April639146
May30826220
June74103479
July16177626
August30134569
September17148337
October529388
November90509
December1,29101

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 13.5 km from Eden. 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 USC00472839 (Fond Du Lac Wwtp). Public domain.