Lakeview climate

Lakeview Frost Dates and Growing Season

NOAA 1991-2020 normals for Lakeview 2 Nnw, 6.1 km from Lakeview, elevation 4890 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Lakeview 2 Nnw. 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 June 4 and the first fall freeze around September 17, a growing season of about 102 days.

Median at 32°F
last June 4, first September 17
Median at 28°F
last May 12, first September 30

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°F–––––––––
32°FJun 22Jun 16Jun 12Jun 8Jun 4Jun 1May 27May 19May 13
28°FJun 6May 31May 22May 16May 12May 7May 3Apr 30Apr 24
24°FMay 13May 4Apr 29Apr 24Apr 20Apr 17Apr 14Apr 9Apr 2
20°FApr 18Apr 12Apr 7Apr 4Mar 31Mar 26Mar 21Mar 13Mar 5
16°FApr 2Mar 26Mar 20Mar 14Mar 8Mar 4Feb 28Feb 22Feb 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°F–––––––––
32°FAug 27Sep 4Sep 9Sep 13Sep 17Sep 20Sep 24Sep 29Oct 5
28°FSep 9Sep 17Sep 22Sep 26Sep 30Oct 3Oct 7Oct 12Oct 19
24°FSep 22Oct 2Oct 8Oct 15Oct 19Oct 23Oct 27Nov 1Nov 8
20°FOct 18Oct 23Oct 29Nov 1Nov 5Nov 9Nov 13Nov 20Nov 25
16°FOct 27Nov 3Nov 9Nov 13Nov 18Nov 22Nov 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°F1009185817570635748
32°F12811911310710297928575
28°F169159152145139133125118106
24°F206196189185179172164156145
20°F250239232225220214207201190
16°F287276268261254248242234222

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
6,830
Cooling degree days, base 65°F
307
Growing degree days, base 40°F
3,770
Growing degree days, base 45°F
2,718
Growing degree days, base 50°F
1,865
Growing degree days, base 55°F
1,192
Growing degree days, base 60°F
672

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,07300
February90200
March82301
April660015
May4283118
June19426293
July37151579
August53109522
September21618270
October524064
November82104
December1,10000

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 6.1 km from Lakeview. 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 USC00354670 (Lakeview 2 Nnw). Public domain.