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
- First fall frost
- November 25
- Growing season
- 264 days
- Hardiness zone
- 9a
50% probability
50% probability
freeze-free, 50%
20 to 25°F (-6.7 to -3.9°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 0%
- Snow per year
- 0"
median, 1991–2020
median, 1991–2020
0 of 24 observed
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%.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 2 | Mar 11 | Mar 17 | Mar 22 | Mar 28 | Apr 1 | Apr 5 | Apr 10 | Apr 17 |
| 32°F | Feb 8 | Feb 19 | Feb 26 | Mar 3 | Mar 8 | Mar 14 | Mar 18 | Mar 25 | Apr 2 |
| 28°F98% of yrs | Jan 14 | Jan 28 | Feb 4 | Feb 10 | Feb 17 | Feb 23 | Feb 28 | Mar 6 | Mar 15 |
| 24°F79% of yrs | Dec 28 | Jan 7 | Jan 16 | Jan 25 | Jan 31 | Feb 3 | Feb 10 | Feb 18 | Feb 27 |
| 20°F39% of yrs | too rare for a date | ||||||||
| 16°F9% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 26 | Nov 1 | Nov 5 | Nov 9 | Nov 12 | Nov 15 | Nov 19 | Nov 24 | Dec 3 |
| 32°F | Nov 5 | Nov 11 | Nov 16 | Nov 20 | Nov 25 | Nov 30 | Dec 3 | Dec 8 | Dec 20 |
| 28°F98% of yrs | Nov 19 | Nov 28 | Dec 3 | Dec 7 | Dec 13 | Dec 22 | Dec 31 | Jan 5 | Jan 18 |
| 24°F79% of yrs | Dec 3 | Dec 11 | Dec 19 | Dec 30 | Jan 3 | Jan 9 | Jan 15 | Jan 26 | Feb 5 |
| 20°F39% of yrs | too rare for a date | ||||||||
| 16°F9% of yrs | too 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.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 68 | 41 | 4.7 | 95% | 10 | 207 |
| Feb | 72 | 44 | 3.4 | 85% | 5 | 256 |
| Mar | 78 | 49 | 4.2 | 59% | 2 | 428 |
| Apr | 82 | 53 | 3.1 | 12% | <1 | 524 |
| May | 88 | 62 | 3.1 | 0% | 0 | 766 |
| Jun | 91 | 69 | 7.6 | 0% | 0 | 897 |
| Jul | 92 | 71 | 7.6 | 0% | 0 | 980 |
| Aug | 92 | 71 | 8.1 | 0% | 0 | 977 |
| Sep | 89 | 68 | 5.4 | 0% | 0 | 847 |
| Oct | 83 | 58 | 3.1 | 5% | 0 | 632 |
| Nov | 77 | 49 | 2.0 | 59% | 2 | 397 |
| Dec | 71 | 44 | 3.3 | 86% | 7 | 270 |
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.
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
| When | What to do |
|---|---|
| December 28 – January 11 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| January 11 – January 25 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| February 8 – February 22 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| March 8 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by September 2 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by November 11 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 25 onward | Plant 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.
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.