USDA Hardiness Zone 10a
Frost Dates for 33471 — Moore Haven, Florida
NOAA 1991–2020 normals from Moore Haven Lock 1, FL (35 ft), 2 miles east.
Updated
A freeze (32°F) reaches Moore Haven in 54% of winters. When it does, the first freeze of winter comes around January 11 and the last freeze of winter around January 23; after February 17 the chance of another is under 5%.
- Last freeze
- January 23
- First freeze
- January 11
- Winters with a freeze
- 54%
- Hardiness zone
- 10a
50%, in freezing years
50%, in freezing years
32°F or below, 1991–2020
30 to 35°F (-1.1 to 1.7°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 Moore Haven
In the 54% of winters that bring a 32°F night, half of winters at Moore Haven Lock 1, FL see their last 32°F night by January 23; only one in ten is past it by December 30, and one in ten still has one after February 17. Counting the winters with no freeze at all, the risk of a 32°F night after February 17 is under 5% and after January 23 27%. 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 January 11 in half of years, as early as December 23 one year in ten, and holds off past February 7 one year in ten. A hard freeze of 28°F is less common: it came in 17% of winters. On average 1 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 12 days longer, to about February 4, and return around January 5. A 24°F night is unusual: 4% of winters had one.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F89% of yrs | Jan 7 | Jan 17 | Jan 25 | Jan 31 | Feb 4 | Feb 10 | Feb 17 | Feb 23 | Mar 3 |
| 32°F54% of yrs | Dec 30 | Jan 7 | Jan 13 | Jan 17 | Jan 23 | Jan 29 | Jan 31 | Feb 7 | Feb 17 |
| 28°F17% of yrs | too rare for a date | ||||||||
| 24°F4% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F89% of yrs | Dec 10 | Dec 23 | Dec 29 | Jan 1 | Jan 5 | Jan 10 | Jan 17 | Jan 25 | Feb 3 |
| 32°F54% of yrs | Dec 23 | Dec 31 | Jan 2 | Jan 6 | Jan 11 | Jan 16 | Jan 22 | Jan 29 | Feb 7 |
| 28°F17% of yrs | too rare for a date | ||||||||
| 24°F4% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Moore Haven Lock 1, 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 33471 →Compare Moore Haven with another place →
Weather by month in Moore Haven
August is the warmest month at Moore Haven Lock 1, FL, averaging 92°F by day and 72°F at night; January is the coldest at 74°F and 50°F. From March to November the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 14% of years.
Warmth for growing adds up to 8,514 growing degree days a year (base 50°F), more than at 60% of the 158 Florida stations. 44% of them (3,746) have built up by the end of June, and August adds the most, 990. Precipitation totals 48.6 inches a year, most in June (8.4") and least in November (1.5"); May to September bring 69% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 74 | 50 | 2.2 | 37% | 1 | 388 |
| Feb | 77 | 52 | 2.0 | 14% | <1 | 414 |
| Mar | 81 | 55 | 2.4 | 2% | 0 | 544 |
| Apr | 85 | 60 | 2.4 | 0% | 0 | 669 |
| May | 89 | 65 | 3.7 | 0% | 0 | 826 |
| Jun | 91 | 69 | 8.4 | 0% | 0 | 905 |
| Jul | 92 | 71 | 7.5 | 0% | 0 | 978 |
| Aug | 92 | 72 | 7.9 | 0% | 0 | 990 |
| Sep | 91 | 71 | 5.9 | 0% | 0 | 927 |
| Oct | 86 | 66 | 2.9 | 0% | 0 | 814 |
| Nov | 80 | 59 | 1.5 | 0% | 0 | 585 |
| Dec | 77 | 54 | 1.8 | 12% | <1 | 474 |
Monthly normals 1991–2020 at Moore Haven Lock 1, FL (35 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, Clewiston #2, FL, 8 miles southeast of Moore Haven, has a last frost 4 days later (January 27), a first frost 2 days later (January 13), a season 4 days shorter.
When it snows in Moore Haven, Florida
Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Moore Haven Lock 1, FL, 1.5 miles away, so there is no typical first-snow date to plan around.
Where these figures come from
ZIP 33471 is 2 miles from Moore Haven Lock 1, FL, which stands at 35 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 33471 in zone 10a, the band where the coldest night of the year averaged 30 to 35°F (-1.1 to 1.7°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.