Minong climate

Minong Frost Dates and Growing Season

NOAA 1991-2020 normals for Gordon, 16.3 km from Minong, elevation 1040 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Gordon. 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 22 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 22, first September 26
Median at 28°F
last May 9, first October 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°FJun 16Jun 11Jun 7Jun 4Jun 2May 30May 28May 25May 20
32°FJun 4May 31May 28May 25May 22May 19May 16May 12May 6
28°FMay 25May 20May 16May 12May 9May 6May 3Apr 30Apr 26
24°FMay 14May 8May 4May 1Apr 29Apr 26Apr 23Apr 20Apr 15
20°FMay 3Apr 28Apr 24Apr 21Apr 19Apr 16Apr 12Apr 9Apr 4
16°FApr 23Apr 18Apr 14Apr 10Apr 7Apr 5Apr 2Mar 31Mar 25

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°FAug 31Sep 4Sep 8Sep 12Sep 15Sep 17Sep 20Sep 23Sep 28
32°FSep 11Sep 17Sep 20Sep 23Sep 26Sep 29Oct 1Oct 4Oct 8
28°FSep 21Sep 27Oct 1Oct 3Oct 5Oct 8Oct 11Oct 15Oct 20
24°FOct 2Oct 7Oct 10Oct 14Oct 18Oct 20Oct 23Oct 27Nov 1
20°FOct 12Oct 19Oct 22Oct 26Oct 29Nov 1Nov 3Nov 6Nov 11
16°FOct 24Oct 29Nov 1Nov 3Nov 6Nov 9Nov 12Nov 15Nov 20

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°F12111511110610299959082
32°F144138133129126122118114108
28°F168162157152148144140135128
24°F190184179174170165161156148
20°F213205201196192187181176169
16°F229223218214210207202197190

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
9,145
Cooling degree days, base 65°F
325
Growing degree days, base 40°F
3,649
Growing degree days, base 45°F
2,734
Growing degree days, base 50°F
1,938
Growing degree days, base 55°F
1,261
Growing degree days, base 60°F
714

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,71400
February1,42100
March1,18004
April745129
May37016181
June12063397
July44131552
August7086481
September26427244
October656248
November1,06503
December1,49700

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 16.3 km from Minong. 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 USC00473186 (Gordon). Public domain.