Steubenville climate

Steubenville Frost Dates and Growing Season

NOAA 1991-2020 normals for Steubenville, 0.9 km from Steubenville, elevation 992 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Steubenville. 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 29 and the first fall freeze around October 20, a growing season of about 175 days.

Median at 36°F
last May 8, first October 9
Median at 32°F
last April 29, first October 20
Median at 28°F
last April 18, first October 31

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

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 28Oct 1Oct 4Oct 6Oct 9Oct 12Oct 14Oct 18Oct 22
32°FOct 6Oct 10Oct 14Oct 17Oct 20Oct 22Oct 25Oct 28Nov 1
28°FOct 17Oct 22Oct 26Oct 28Oct 31Nov 2Nov 4Nov 8Nov 12
24°FOct 30Nov 2Nov 4Nov 7Nov 9Nov 13Nov 16Nov 20Nov 26
20°FNov 7Nov 12Nov 15Nov 19Nov 22Nov 26Nov 30Dec 3Dec 9
16°FNov 16Nov 22Nov 28Dec 1Dec 4Dec 8Dec 14Dec 20Dec 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°F173167161157154150145141134
32°F192186181178175171167162155
28°F214208204200195192188182175
24°F240231225221217213209205198
20°F265255250245240235230225218
16°F291281275268263257251245237

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
5,828
Cooling degree days, base 65°F
733
Growing degree days, base 40°F
5,287
Growing degree days, base 45°F
4,097
Growing degree days, base 50°F
3,047
Growing degree days, base 55°F
2,134
Growing degree days, base 60°F
1,356

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,15104
February97204
March837028
April4566120
May19246331
June35144560
July4242704
August9205662
September8781446
October3888153
November707030
December99206

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 0.9 km from Steubenville. 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 USC00338025 (Steubenville). Public domain.