Newberry climate

Newberry Frost Dates and Growing Season

NOAA 1991-2020 normals for Newberry, 1.9 km from Newberry, elevation 513 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Newberry. 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 31 and the first fall freeze around November 7, a growing season of about 223 days.

Median at 36°F
last April 9, first October 28
Median at 32°F
last March 31, first November 7
Median at 28°F
last March 18, first November 20

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 23Apr 18Apr 15Apr 12Apr 9Apr 6Apr 4Apr 1Mar 26
32°FApr 15Apr 9Apr 5Apr 2Mar 31Mar 28Mar 23Mar 18Mar 12
28°FApr 4Mar 30Mar 27Mar 23Mar 18Mar 14Mar 10Mar 3Feb 24
24°FMar 27Mar 21Mar 15Mar 10Mar 5Feb 28Feb 21Feb 15Feb 6
20°FMar 14Mar 4Feb 27Feb 18Feb 12Feb 6Jan 31Jan 26Jan 15
16°FFeb 28Feb 15Feb 7Feb 2Jan 30Jan 26Jan 18Jan 12Jan 2

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 15Oct 20Oct 23Oct 26Oct 28Oct 31Nov 1Nov 5Nov 9
32°FOct 26Oct 31Nov 1Nov 4Nov 7Nov 10Nov 13Nov 17Nov 24
28°FNov 4Nov 8Nov 12Nov 16Nov 20Nov 25Dec 1Dec 5Dec 12
24°FNov 13Nov 21Nov 28Dec 2Dec 5Dec 10Dec 18Dec 27Jan 4
20°FDec 1Dec 5Dec 12Dec 20Dec 28Jan 1Jan 5Jan 12Jan 22
16°FDec 11Dec 22Dec 30Jan 2Jan 8Jan 12Jan 18Jan 26Feb 4

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°F221215210206202198195190183
32°F247237232227223218214209202
28°F276266259253248242236230223
24°F310299291284277270264256246
20°F344334326318310303296287275
16°F365365358347340333326316304

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
96% of years
16°F or colder
76% 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
2,978
Cooling degree days, base 65°F
1,850
Growing degree days, base 40°F
8,172
Growing degree days, base 45°F
6,582
Growing degree days, base 50°F
5,149
Growing degree days, base 55°F
3,882
Growing degree days, base 60°F
2,779

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January695138
February533157
March4008154
April16049349
May35182612
June2371819
July0485950
August0429894
September11259699
October13859392
November3985130
December607156

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 1.9 km from Newberry. 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 USC00386209 (Newberry). Public domain.