Eustis climate

Eustis Frost Dates and Growing Season

NOAA 1991-2020 normals for Eustis, 0.8 km from Eustis, elevation 1260 ft

Frost and the growing season

NOAA's 1991-2020 freeze probabilities for Eustis. 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 May 24 and the first fall freeze around September 21, a growing season of about 118 days.

Median at 36°F
last June 5, first September 8
Median at 32°F
last May 24, first September 21
Median at 28°F
last May 10, first October 2

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°FJun 17Jun 12Jun 9Jun 7Jun 5Jun 3May 31May 28May 23
32°FJun 6Jun 3May 30May 27May 24May 21May 18May 14May 8
28°FMay 26May 21May 17May 13May 10May 6May 3Apr 30Apr 26
24°FMay 12May 6May 2Apr 30Apr 27Apr 24Apr 21Apr 18Apr 12
20°FApr 26Apr 23Apr 20Apr 17Apr 15Apr 12Apr 9Apr 7Apr 4
16°FApr 20Apr 15Apr 12Apr 9Apr 7Apr 5Apr 3Apr 1Mar 30

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°FAug 27Sep 1Sep 3Sep 5Sep 8Sep 11Sep 14Sep 18Sep 23
32°FSep 6Sep 10Sep 14Sep 17Sep 21Sep 24Sep 26Sep 30Oct 4
28°FSep 17Sep 23Sep 27Oct 1Oct 2Oct 5Oct 7Oct 11Oct 18
24°FOct 1Oct 5Oct 9Oct 13Oct 17Oct 21Oct 26Oct 31Nov 4
20°FOct 17Oct 21Oct 26Oct 30Nov 1Nov 3Nov 6Nov 10Nov 15
16°FOct 31Nov 2Nov 5Nov 8Nov 11Nov 14Nov 17Nov 19Nov 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°F1141081041009793898476
32°F139133127122118114110106100
28°F164158153149145140136129123
24°F193186181176172168163158151
20°F217211206202199195192187181
16°F235229225221217214211206201

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
9,565
Cooling degree days, base 65°F
144
Growing degree days, base 40°F
2,997
Growing degree days, base 45°F
2,143
Growing degree days, base 50°F
1,416
Growing degree days, base 55°F
824
Growing degree days, base 60°F
395

Growing degree days by month, base 50°F

Heating and cooling by month

MonthHeating DDCooling DDGrowing DD 50
January1,64300
February1,43100
March1,29701
April85408
May484493
June20027285
July8863440
August12038384
September32811177
October693027
November1,01602
December1,41200

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 0.8 km from Eustis. 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 USC00172700 (Eustis). Public domain.