Cleveland climate

Cleveland Frost Dates and Growing Season

NOAA 1991-2020 normals for Salisbury 9 Wnw, 6.4 km from Cleveland, elevation 725 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Salisbury 9 Wnw. 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 9 and the first fall freeze around October 28, a growing season of about 203 days.

Median at 36°F
last April 21, first October 21
Median at 32°F
last April 9, first October 28
Median at 28°F
last March 28, first November 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°FMay 10May 3Apr 29Apr 25Apr 21Apr 19Apr 16Apr 12Apr 7
32°FApr 24Apr 19Apr 14Apr 11Apr 9Apr 5Apr 2Mar 31Mar 24
28°FApr 10Apr 6Apr 3Mar 31Mar 28Mar 25Mar 21Mar 17Mar 10
24°FApr 1Mar 27Mar 23Mar 19Mar 16Mar 12Mar 9Mar 3Feb 25
20°FMar 21Mar 15Mar 11Mar 7Mar 3Feb 27Feb 21Feb 13Feb 3
16°FMar 13Mar 5Feb 27Feb 20Feb 11Feb 5Jan 31Jan 24Jan 10

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 10Oct 13Oct 16Oct 18Oct 21Oct 23Oct 25Oct 27Oct 31
32°FOct 15Oct 20Oct 23Oct 26Oct 28Oct 31Nov 1Nov 4Nov 8
28°FOct 26Oct 30Nov 1Nov 3Nov 6Nov 9Nov 12Nov 16Nov 22
24°FNov 3Nov 7Nov 11Nov 14Nov 18Nov 21Nov 26Dec 1Dec 8
20°FNov 14Nov 19Nov 26Dec 1Dec 3Dec 8Dec 15Dec 24Jan 1
16°FDec 1Dec 5Dec 11Dec 20Dec 26Jan 1Jan 5Jan 12Jan 24

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°F201194190185181177173168161
32°F221214210206203199195190183
28°F248238232227223220215211205
24°F276266259253248243237232225
20°F312301293287281274267258250
16°F346336329321310304297290278

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
97% 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
3,755
Cooling degree days, base 65°F
1,441
Growing degree days, base 40°F
7,157
Growing degree days, base 45°F
5,693
Growing degree days, base 50°F
4,393
Growing degree days, base 55°F
3,251
Growing degree days, base 60°F
2,268

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January815018
February651026
March5014105
April23630270
May70126522
June6293736
July0408873
August0362826
September27184607
October21630296
November499386
December732129

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 6.4 km from Cleveland. 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 USC00317618 (Salisbury 9 Wnw). Public domain.