Long Lake climate

Long Lake Frost Dates and Growing Season

NOAA 1991-2020 normals for Newcomb, 15.9 km from Long Lake, elevation 1647 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Newcomb. 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 21 and the first fall freeze around September 26, a growing season of about 126 days.

Median at 36°F
last June 2, first September 15
Median at 32°F
last May 21, first September 26
Median at 28°F
last May 8, first October 6

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

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 1Sep 5Sep 9Sep 12Sep 15Sep 18Sep 21Sep 24Sep 27
32°FSep 13Sep 17Sep 21Sep 23Sep 26Sep 28Oct 1Oct 3Oct 7
28°FSep 25Sep 30Oct 2Oct 4Oct 6Oct 9Oct 13Oct 16Oct 21
24°FOct 4Oct 9Oct 13Oct 17Oct 20Oct 23Oct 27Oct 31Nov 4
20°FOct 18Oct 23Oct 28Oct 31Nov 2Nov 5Nov 7Nov 11Nov 16
16°FNov 1Nov 4Nov 6Nov 9Nov 12Nov 15Nov 18Nov 21Nov 26

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°F12111511010610299948982
32°F146139134130126122118114108
28°F170163158154150146143138132
24°F196188181177173169165160153
20°F216210206202198195191186179
16°F234229225221218214211207202

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
8,949
Cooling degree days, base 65°F
147
Growing degree days, base 40°F
3,251
Growing degree days, base 45°F
2,354
Growing degree days, base 50°F
1,579
Growing degree days, base 55°F
934
Growing degree days, base 60°F
446

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,56100
February1,35800
March1,23201
April794016
May4176134
June16531322
July6861459
August9938405
September28510204
October650037
November97202
December1,35000

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 15.9 km from Long Lake. 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 USC00305714 (Newcomb). Public domain.