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USDA Hardiness Zone 9a

Frost Dates for 32066 — Mayo, Florida

NOAA 1991–2020 normals from Mayo, FL (65 ft), 3 miles northeast.

Updated

In Mayo, the last spring frost (32°F) is around March 8 in half of years and has passed by April 2 in nine years out of ten. The first fall frost comes around November 25, as early as November 5 one year in ten, leaving a typical freeze-free season of 264 days (NOAA, Mayo, FL).

Last spring frost
March 8

50% probability

First fall frost
November 25

50% probability

Growing season
264 days

freeze-free, 50%

Hardiness zone
9a

20 to 25°F (-6.7 to -3.9°C) coldest night

First snow
Rare

median, 1991–2020

Last snow
Rare

median, 1991–2020

Winters with snow
0%

0 of 24 observed

Snow per year
0"

NOAA normal

Frost risk by date in Mayo

Half of springs at Mayo, FL see their last 32°F night by March 8; only one in ten is past it by February 8, and one in ten still has one after April 2. Planting tender crops after March 18 leaves a 30% risk of a frost on them, after March 25 20%, and after April 2 10%. The 25 days between the even-odds date and the one-in-ten date is narrower than at 49% of the 101 Florida stations behind this site's ZIP pages, so a fixed calendar date is a gamble here.

In fall the first 32°F night comes by November 25 in half of years, as early as November 5 one year in ten, and holds off past December 20 one year in ten. A hard freeze of 28°F follows 18 days later, around December 13; in spring the one-in-ten date for 28°F is March 15, 18 days before the 32°F one. The freeze-free season lasts 264 days in a typical year, shorter than at 82% of the 102 Florida stations; it reaches 300 days one year in ten and falls short of 228 one year in ten. On average 27 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 20 days longer, to about March 28, and return around November 12. Nights of 24°F, cold enough to damage hardier plants, come in 79% of winters and 16°F in 9%.

Spring: the chance of another night this cold after the date
Low90%80%70%60%50%40%30%20%10%
36°FMar 2Mar 11Mar 17Mar 22Mar 28Apr 1Apr 5Apr 10Apr 17
32°FFeb 8Feb 19Feb 26Mar 3Mar 8Mar 14Mar 18Mar 25Apr 2
28°F98% of yrsJan 14Jan 28Feb 4Feb 10Feb 17Feb 23Feb 28Mar 6Mar 15
24°F79% of yrsDec 28Jan 7Jan 16Jan 25Jan 31Feb 3Feb 10Feb 18Feb 27
20°F39% of yrstoo rare for a date
16°F9% of yrstoo rare for a date
Fall: the chance the first night this cold has come by the date
Low10%20%30%40%50%60%70%80%90%
36°FOct 26Nov 1Nov 5Nov 9Nov 12Nov 15Nov 19Nov 24Dec 3
32°FNov 5Nov 11Nov 16Nov 20Nov 25Nov 30Dec 3Dec 8Dec 20
28°F98% of yrsNov 19Nov 28Dec 3Dec 7Dec 13Dec 22Dec 31Jan 5Jan 18
24°F79% of yrsDec 3Dec 11Dec 19Dec 30Jan 3Jan 9Jan 15Jan 26Feb 5
20°F39% of yrstoo rare for a date
16°F9% of yrstoo rare for a date

Freeze probabilities 1991–2020 at Mayo, FL, from NOAA NCEI U.S. Climate Normals. Where a temperature is reached in fewer than 99.5% of years, the dates describe only the years that reach it. Not a forecast.

Frost risk on any date in 32066 →Compare Mayo with another place →

Weather by month in Mayo

July is the warmest month at Mayo, FL, averaging 92°F by day and 71°F at night; January is the coldest at 68°F and 41°F. A freezing night is all but certain in January (a 90% chance or more). From May to October the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 85% of years and March still brings one in 59% of years and April still brings one in 12% of years.

Warmth for growing adds up to 7,179 growing degree days a year (base 50°F), fewer than at 77% of the 158 Florida stations. 43% of them (3,078) have built up by the end of June, and July adds the most, 980. Precipitation totals 55.6 inches a year, most in August (8.1") and least in November (2.0"); May to September bring 57% of it.

Monthly normals 1991–2020 at Mayo, FL
MonthHigh °FLow °FPrecip. in32°F nightNights ≤ 32°FGDD 50°F
Jan68414.795%10207
Feb72443.485%5256
Mar78494.259%2428
Apr82533.112%<1524
May88623.10%0766
Jun91697.60%0897
Jul92717.60%0980
Aug92718.10%0977
Sep89685.40%0847
Oct83583.15%0632
Nov77492.059%2397
Dec71443.386%7270

Monthly normals 1991–2020 at Mayo, FL (65 ft), NOAA NCEI. "32°F night": chance of at least one in the month. GDD: growing degree days, base 50°F.

Compared with the next station

The nearest other station, Live Oak, FL, 21 miles northeast of Mayo, has a last frost 16 days earlier (February 20), a first frost 11 days later (December 6), a season 28 days longer.

Frost dates for 32060 (Live Oak) →

When it snows in Mayo, Florida

Measurable snow is rare here: only 0 of 24 winters from 1991 to 2020 recorded 0.1 inch or more at Mayo, FL, 2.6 miles away, so there is no typical first-snow date to plan around.

Planting calendar for 32066

What to do and when, from the 50% frost dates for Mayo, Florida
WhenWhat to do
December 28 – January 11Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out.
January 11 – January 25Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early.
February 8 – February 22Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil.
March 8 onwardTransplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast.
by September 2Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops.
by November 11Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation.
November 25 onwardPlant garlic, mulch beds, lift tender bulbsGarlic wants a cold spell; bare soil loses structure over winter.

The weeks before and after the 50% dates are general rules of thumb, not NOAA figures; a seed packet gives the timing for each variety.

Where these figures come from

ZIP 32066 is 3 miles from Mayo, FL, which stands at 65 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 32066 in zone 9a, the band where the coldest night of the year averaged 20 to 25°F (-6.7 to -3.9°C) over 1991–2020; a zone describes winter lows, not frost dates.

Frost dates across Florida →

Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged. °C converted from °F by this site.

Thirty-year averages, not a forecast: check the forecast before planting out. How stations are matched and which pages are offered to search engines: methodology.

ZIP codes measured at the same station

Other zone 9a places in Florida