Warden climate

Warden Frost Dates and Growing Season

NOAA 1991-2020 normals for Lind 3 Ne, 36.2 km from Warden, elevation 1630 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Lind 3 Ne. 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 7 and the first fall freeze around October 4, a growing season of about 150 days.

Median at 36°F
last May 23, first September 22
Median at 32°F
last May 7, first October 4
Median at 28°F
last April 23, first October 17

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°FJun 11Jun 4May 31May 27May 23May 20May 16May 12May 6
32°FMay 21May 16May 13May 10May 7May 4May 1Apr 28Apr 22
28°FMay 11May 5May 1Apr 27Apr 23Apr 18Apr 12Apr 5Mar 28
24°FApr 26Apr 14Apr 4Mar 30Mar 24Mar 16Mar 10Mar 3Feb 21
20°FMar 19Mar 10Mar 2Feb 27Feb 21Feb 15Feb 8Feb 2Jan 21
16°FFeb 28Feb 21Feb 14Feb 7Feb 1Jan 26Jan 17Jan 8Dec 30

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 5Sep 10Sep 14Sep 19Sep 22Sep 26Sep 29Oct 2Oct 6
32°FSep 22Sep 26Sep 30Oct 2Oct 4Oct 7Oct 10Oct 15Oct 20
28°FOct 2Oct 6Oct 9Oct 13Oct 17Oct 20Oct 24Oct 29Nov 4
24°FOct 12Oct 17Oct 22Oct 27Oct 30Nov 2Nov 7Nov 12Nov 20
20°FOct 23Oct 29Nov 3Nov 8Nov 12Nov 18Nov 23Nov 29Dec 8
16°FNov 1Nov 10Nov 15Nov 22Nov 27Dec 2Dec 9Dec 15Dec 28

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°F14413613012512011411010595
32°F173164159154150146141137128
28°F209200193186180174168161154
24°F258245236229222214206198184
20°F304292283275266259252244231
16°F341327317310302295287277264

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
98% 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
5,736
Cooling degree days, base 65°F
590
Growing degree days, base 40°F
4,821
Growing degree days, base 45°F
3,604
Growing degree days, base 50°F
2,590
Growing degree days, base 55°F
1,752
Growing degree days, base 60°F
1,084

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,01800
February79502
March667014
April460174
May24520255
June9766419
July16230679
August19211657
September13061385
October457298
November78608
December1,04600

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 36.2 km from Warden. 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 USC00454679 (Lind 3 Ne). Public domain.