Lindon climate

Lindon Frost Dates and Growing Season

NOAA 1991-2020 normals for Pleasant Grove, 2.9 km from Lindon, elevation 4692 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Pleasant Grove. 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 17 and the first fall freeze around October 25, a growing season of about 188 days.

Median at 36°F
last May 3, first October 13
Median at 32°F
last April 17, first October 25
Median at 28°F
last March 30, first November 5

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 23May 15May 10May 6May 3Apr 30Apr 27Apr 24Apr 19
32°FMay 7Apr 30Apr 26Apr 22Apr 17Apr 13Apr 9Apr 5Mar 30
28°FApr 17Apr 11Apr 6Apr 2Mar 30Mar 25Mar 19Mar 14Mar 8
24°FMar 31Mar 24Mar 17Mar 12Mar 8Mar 4Feb 28Feb 25Feb 19
20°FMar 10Mar 5Mar 1Feb 26Feb 22Feb 18Feb 13Feb 8Feb 1
16°FFeb 27Feb 21Feb 16Feb 11Feb 6Feb 3Jan 29Jan 23Jan 13

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 29Oct 3Oct 6Oct 10Oct 13Oct 16Oct 19Oct 22Oct 27
32°FOct 10Oct 16Oct 19Oct 22Oct 25Oct 28Oct 31Nov 4Nov 8
28°FOct 21Oct 26Oct 30Nov 2Nov 5Nov 7Nov 11Nov 15Nov 19
24°FOct 30Nov 4Nov 8Nov 11Nov 15Nov 18Nov 22Nov 26Dec 1
20°FNov 8Nov 15Nov 19Nov 22Nov 27Nov 29Dec 3Dec 6Dec 12
16°FNov 17Nov 23Nov 28Dec 1Dec 6Dec 9Dec 13Dec 19Dec 27

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°F182174169165161156151144135
32°F213204199193188183178172162
28°F246237231225220215209203193
24°F275267261255251245240233223
20°F304294287282277272267260252
16°F333323315308303297291285277

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
5,005
Cooling degree days, base 65°F
1,187
Growing degree days, base 40°F
6,029
Growing degree days, base 45°F
4,736
Growing degree days, base 50°F
3,613
Growing degree days, base 55°F
2,650
Growing degree days, base 60°F
1,848

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,01400
February76903
March574049
April3884132
May16952357
June38200613
July1424888
August2368831
September59132526
October3319188
November674027
December98901

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 2.9 km from Lindon. 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 USC00426919 (Pleasant Grove). Public domain.