Ore City climate

Ore City Frost Dates and Growing Season

NOAA 1991-2020 normals for Daingerfield 9 S, 13.4 km from Ore City, elevation 300 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Daingerfield 9 S. 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 March 8 and the first fall freeze around November 22, a growing season of about 259 days.

Median at 36°F
last March 23, first November 10
Median at 32°F
last March 8, first November 22
Median at 28°F
last February 24, first December 4

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

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 28Nov 1Nov 4Nov 7Nov 10Nov 13Nov 17Nov 21Nov 29
32°FNov 4Nov 9Nov 13Nov 17Nov 22Nov 26Dec 1Dec 4Dec 11
28°FNov 13Nov 20Nov 25Nov 30Dec 4Dec 9Dec 14Dec 23Dec 31
24°FNov 26Dec 3Dec 11Dec 20Dec 26Jan 1Jan 6Jan 14Jan 25
20°FDec 10Dec 20Dec 28Jan 1Jan 6Jan 12Jan 18Jan 26Feb 5
16°FDec 21Jan 1Jan 4Jan 8Jan 12Jan 17Jan 22Feb 2Feb 9

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°F258250243238233228223217209
32°F283276270264259255249243234
28°F319308299293287280274266257
24°F357343334328321314305298286
20°F365365365362354346338330319
16°F365365365365365365365358343

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
93% of years
20°F or colder
61% of years
16°F or colder
24% 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
2,501
Cooling degree days, base 65°F
2,415
Growing degree days, base 40°F
9,169
Growing degree days, base 45°F
7,528
Growing degree days, base 50°F
6,021
Growing degree days, base 55°F
4,660
Growing degree days, base 60°F
3,454

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January627257
February465491
March29521236
April10877423
May16246696
June0443892
July05611,026
August05641,029
September5359804
October92115491
November32718199
December566477

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 13.4 km from Ore City. 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 USC00412225 (Daingerfield 9 S). Public domain.