Baltic climate

Baltic Frost Dates and Growing Season

NOAA 1991-2020 normals for Coshocton Ag Rsch Stn, 10.9 km from Baltic, elevation 1140 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Coshocton Ag Rsch Stn. 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 18 and the first fall freeze around October 28, a growing season of about 190 days.

Median at 36°F
last April 29, first October 16
Median at 32°F
last April 18, first October 28
Median at 28°F
last April 6, first November 7

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 16May 9May 5May 2Apr 29Apr 25Apr 22Apr 19Apr 15
32°FMay 5Apr 29Apr 23Apr 20Apr 18Apr 15Apr 12Apr 8Apr 4
28°FApr 20Apr 16Apr 13Apr 9Apr 6Apr 4Apr 2Mar 30Mar 25
24°FApr 11Apr 5Apr 2Mar 31Mar 30Mar 26Mar 23Mar 19Mar 14
20°FApr 1Mar 29Mar 26Mar 23Mar 19Mar 16Mar 14Mar 10Mar 4
16°FMar 27Mar 21Mar 17Mar 14Mar 11Mar 7Mar 3Feb 28Feb 21

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 2Oct 7Oct 10Oct 13Oct 16Oct 18Oct 21Oct 24Oct 28
32°FOct 11Oct 17Oct 21Oct 25Oct 28Oct 31Nov 1Nov 5Nov 10
28°FOct 24Oct 31Nov 2Nov 4Nov 7Nov 10Nov 13Nov 17Nov 22
24°FNov 3Nov 8Nov 11Nov 14Nov 17Nov 20Nov 25Nov 30Dec 5
20°FNov 11Nov 16Nov 21Nov 25Nov 29Dec 1Dec 6Dec 11Dec 19
16°FNov 22Nov 28Dec 1Dec 5Dec 10Dec 15Dec 20Dec 25Jan 1

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°F186179175171167164159154147
32°F210204198194190185180176168
28°F234227222217214210206201194
24°F257249244240236232228223217
20°F279271265260256251247241233
16°F302293286282277271266260251

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
5,684
Cooling degree days, base 65°F
845
Growing degree days, base 40°F
5,538
Growing degree days, base 45°F
4,326
Growing degree days, base 50°F
3,250
Growing degree days, base 55°F
2,309
Growing degree days, base 60°F
1,505

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,15604
February97804
March808133
April42110142
May17461361
June28174595
July3260722
August7228687
September7698474
October35713181
November677140
December99807

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 10.9 km from Baltic. Low ground, valleys and open fields freeze earlier and later than a town center or a hillside.

More

Sources

NOAA NCEI U.S. Climate Normals, 1991-2020, annual and seasonal normals for station USC00331905 (Coshocton Ag Rsch Stn). Public domain.