Wendover climate

Wendover Frost Dates and Growing Season

NOAA 1991-2020 normals for Wendover AP Awos, 1.8 km from Wendover, elevation 4237 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Wendover AP Awos. 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 18 and the first fall freeze around October 23, a growing season of about 188 days.

Median at 36°F
last April 30, first October 14
Median at 32°F
last April 18, first October 23
Median at 28°F
last March 31, first November 1

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 15May 9May 6May 2Apr 30Apr 27Apr 23Apr 20Apr 15
32°FMay 5Apr 29Apr 25Apr 20Apr 18Apr 13Apr 9Apr 4Mar 31
28°FApr 20Apr 13Apr 7Apr 3Mar 31Mar 28Mar 24Mar 20Mar 14
24°FApr 3Mar 28Mar 22Mar 18Mar 14Mar 10Mar 7Mar 4Feb 27
20°FMar 15Mar 9Mar 6Mar 2Feb 28Feb 23Feb 20Feb 15Feb 9
16°FMar 2Feb 25Feb 19Feb 15Feb 12Feb 8Feb 4Feb 1Jan 24

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 1Oct 6Oct 9Oct 12Oct 14Oct 17Oct 19Oct 22Oct 25
32°FOct 13Oct 17Oct 19Oct 21Oct 23Oct 26Oct 28Nov 1Nov 4
28°FOct 20Oct 24Oct 27Oct 29Nov 1Nov 3Nov 5Nov 9Nov 13
24°FOct 27Nov 1Nov 4Nov 6Nov 9Nov 12Nov 14Nov 18Nov 21
20°FNov 2Nov 9Nov 12Nov 16Nov 19Nov 22Nov 24Nov 28Dec 2
16°FNov 11Nov 18Nov 23Nov 26Nov 29Dec 1Dec 5Dec 8Dec 15

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°F185179174170166161156151143
32°F209203198193188183179174166
28°F234227223218214209204199190
24°F259252247243239234230224215
20°F286278273268263259255248240
16°F314305299294290284279272263

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
5,824
Cooling degree days, base 65°F
1,241
Growing degree days, base 40°F
5,715
Growing degree days, base 45°F
4,528
Growing degree days, base 50°F
3,499
Growing degree days, base 55°F
2,619
Growing degree days, base 60°F
1,872

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,16700
February87101
March668019
April4233106
May18154348
June35220635
July1465928
August2388851
September75109486
October4173121
November82604
December1,15800

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 1.8 km from Wendover. 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 USW00024193 (Wendover AP Awos). Public domain.