Jesup climate

Jesup Frost Dates and Growing Season

NOAA 1991-2020 normals for Jesup 8 S, 11.4 km from Jesup, elevation 100 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Jesup 8 S. 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 24 and the first fall freeze around November 10, a growing season of about 233 days.

Median at 36°F
last April 4, first November 1
Median at 32°F
last March 24, first November 10
Median at 28°F
last March 10, first November 21

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

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 20Oct 25Oct 28Oct 30Nov 1Nov 4Nov 7Nov 10Nov 17
32°FOct 28Nov 1Nov 4Nov 7Nov 10Nov 13Nov 16Nov 22Dec 1
28°FNov 4Nov 9Nov 14Nov 17Nov 21Nov 26Dec 1Dec 7Dec 19
24°FNov 15Nov 22Nov 27Dec 2Dec 7Dec 14Dec 23Jan 2Jan 13
20°FNov 29Dec 6Dec 14Dec 22Dec 29Jan 4Jan 11Jan 19Feb 2
16°FDec 13Dec 24Dec 29Jan 4Jan 9Jan 14Jan 19Jan 27Feb 6

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°F234226221217212207203198190
32°F259250244238233228223217209
28°F292281272265259253247239232
24°F334321311302296289281270258
20°F365358347338333325317306294
16°F365365365365365360349338325

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
99% of years
20°F or colder
83% of years
16°F or colder
42% 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
2,012
Cooling degree days, base 65°F
2,110
Growing degree days, base 40°F
9,271
Growing degree days, base 45°F
7,547
Growing degree days, base 50°F
5,941
Growing degree days, base 55°F
4,490
Growing degree days, base 60°F
3,203

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January521391
February3646125
March25316257
April9075437
May16210659
June1388837
July0493958
August0459924
September2315763
October72114509
November26124245
December4328137

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 11.4 km from Jesup. 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 USC00094676 (Jesup 8 S). Public domain.