Hollywood climate

Hollywood Frost Dates and Growing Season

NOAA 1991-2020 normals for Edisto Is Middleton Plantation, 16.1 km from Hollywood, elevation 12 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Edisto Is Middleton Plantation. 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 1 and the first fall freeze around December 6, a growing season of about 284 days.

Median at 36°F
last March 13, first November 21
Median at 32°F
last March 1, first December 6
Median at 28°F
last February 10, first December 29

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°FMar 31Mar 26Mar 21Mar 17Mar 13Mar 9Mar 6Mar 1Feb 22
32°FMar 22Mar 15Mar 10Mar 5Mar 1Feb 25Feb 18Feb 11Feb 1
28°FMar 9Mar 2Feb 25Feb 18Feb 10Feb 3Jan 31Jan 24Jan 9
24°FMar 1Feb 18Feb 7Feb 1Jan 29Jan 23Jan 15Jan 8Dec 31
20°FFeb 7Jan 31Jan 28Jan 23Jan 17Jan 12Jan 7Jan 3Dec 31
16°F–––––––––

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°FNov 5Nov 10Nov 14Nov 17Nov 21Nov 25Nov 30Dec 5Dec 12
32°FNov 15Nov 22Nov 27Dec 1Dec 6Dec 11Dec 18Dec 25Jan 4
28°FDec 1Dec 8Dec 16Dec 23Dec 29Jan 2Jan 6Jan 13Jan 26
24°FDec 16Dec 25Dec 31Jan 3Jan 8Jan 12Jan 18Jan 26Feb 8
20°FDec 26Jan 1Jan 4Jan 9Jan 13Jan 18Jan 23Jan 30Feb 6
16°F–––––––––

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°F280271264259254248243236227
32°F318304297290284278272263253
28°F353339331323316308301293282
24°F365365365359350341333324308
20°F365365365365365365365355335
16°F365365365365365365365365365

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
95% of years
24°F or colder
68% of years
20°F or colder
29% of years
16°F or colder
5% 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
1,796
Cooling degree days, base 65°F
2,431
Growing degree days, base 40°F
9,798
Growing degree days, base 45°F
8,052
Growing degree days, base 50°F
6,408
Growing degree days, base 55°F
4,907
Growing degree days, base 60°F
3,573

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January4792109
February3494138
March22424283
April6595481
May6273732
June0435885
July05351,000
August0515980
September1367816
October42153577
November22624265
December4044143

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 16.1 km from Hollywood. 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 USC00382735 (Edisto Is Middleton Plantation). Public domain.