USDA Hardiness Zone 9b
Frost Dates for 34639 — Land O Lakes, Florida
NOAA 1991–2020 normals from Saint Leo, FL (190 ft), 14 miles northeast.
Updated
A freeze (32°F) reaches Land O Lakes in 81% of winters. When it does, the first freeze of winter comes around January 8 and the last freeze of winter around January 31; after February 28 the chance of another is under 8%.
- Last freeze
- January 31
- First freeze
- January 8
- Winters with a freeze
- 81%
- Hardiness zone
- 9b
50%, in freezing years
50%, in freezing years
32°F or below, 1991–2020
25 to 30°F (-3.9 to -1.1°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 20 observed
NOAA normal
Frost risk by date in Land O Lakes
In the 81% of winters that bring a 32°F night, half of winters at Saint Leo, FL see their last 32°F night by January 31; only one in ten is past it by January 3, and one in ten still has one after February 28. Counting the winters with no freeze at all, the risk of a 32°F night after February 28 is under 8% and after January 31 41%. The 28 days between the even-odds date and the one-in-ten date is wider than at 67% 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 January 8 in half of years, as early as December 10 one year in ten, and holds off past February 10 one year in ten. A hard freeze of 28°F is less common: it came in 37% of winters. On average 3 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 16 days longer, to about February 16, and return around December 22. A 24°F night is unusual: 10% of winters had one.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F98% of yrs | Jan 16 | Jan 27 | Feb 3 | Feb 9 | Feb 16 | Feb 22 | Feb 28 | Mar 6 | Mar 15 |
| 32°F81% of yrs | Jan 3 | Jan 10 | Jan 18 | Jan 26 | Jan 31 | Feb 5 | Feb 12 | Feb 19 | Feb 28 |
| 28°F37% of yrs | too rare for a date | ||||||||
| 24°F10% of yrs | too rare for a date | ||||||||
| 20°F0% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F98% of yrs | Nov 28 | Dec 3 | Dec 7 | Dec 14 | Dec 22 | Dec 30 | Jan 5 | Jan 12 | Jan 23 |
| 32°F81% of yrs | Dec 10 | Dec 21 | Dec 29 | Jan 3 | Jan 8 | Jan 13 | Jan 20 | Jan 28 | Feb 10 |
| 28°F37% of yrs | too rare for a date | ||||||||
| 24°F10% of yrs | too rare for a date | ||||||||
| 20°F0% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Saint Leo, 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 34639 →Compare Land O Lakes with another place →
Weather by month in Land O Lakes
August is the warmest month at Saint Leo, FL, averaging 90°F by day and 73°F at night; January is the coldest at 70°F and 49°F. From March to November the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 33% of years.
Warmth for growing adds up to 8,044 growing degree days a year (base 50°F), fewer than at 55% of the 158 Florida stations. 44% of them (3,568) have built up by the end of June, and August adds the most, 973. Precipitation totals 53.6 inches a year, most in June (8.3") and least in November (1.9"); May to September bring 64% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 70 | 49 | 3.1 | 58% | 2 | 320 |
| Feb | 73 | 52 | 2.4 | 33% | 1 | 360 |
| Mar | 78 | 55 | 3.2 | 8% | <1 | 511 |
| Apr | 83 | 60 | 3.1 | 0% | 0 | 644 |
| May | 88 | 66 | 3.0 | 0% | 0 | 828 |
| Jun | 89 | 71 | 8.3 | 0% | 0 | 906 |
| Jul | 90 | 73 | 8.1 | 0% | 0 | 972 |
| Aug | 90 | 73 | 8.3 | 0% | 0 | 973 |
| Sep | 88 | 71 | 6.6 | 0% | 0 | 893 |
| Oct | 83 | 65 | 3.1 | 0% | 0 | 749 |
| Nov | 77 | 57 | 1.9 | 1% | 0 | 505 |
| Dec | 72 | 52 | 2.5 | 27% | 1 | 386 |
Monthly normals 1991–2020 at Saint Leo, FL (190 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, Brooksville Hernando Co Airport, FL, 17 miles north of Land O Lakes, has a last frost 29 days later (March 1), a first frost 34 days earlier (December 5), a season 55 days shorter.
When it snows in Land O Lakes, Florida
Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Saint Leo, FL, 13.9 miles away, so there is no typical first-snow date to plan around.
Where these figures come from
ZIP 34639 is 14 miles from Saint Leo, FL, which stands at 190 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 11 other ZIP codes share the station; its figures are presented in full for 33578 (Riverview). The 2023 USDA Plant Hardiness Zone Map lists ZIP 34639 in zone 9b, the band where the coldest night of the year averaged 25 to 30°F (-3.9 to -1.1°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.