USDA Hardiness Zone 9b
Frost Dates for 34446 — Homosassa, Florida
NOAA 1991–2020 normals from Brooksville Chin Hill, FL (240 ft), 14 miles southeast.
Updated
A freeze (32°F) reaches Homosassa in 86% of winters. When it does, the first freeze of winter comes around January 3 and the last freeze of winter around February 3; after March 3 the chance of another is under 9%.
- Last freeze
- February 3
- First freeze
- January 3
- Winters with a freeze
- 86%
- 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 Homosassa
In the 86% of winters that bring a 32°F night, half of winters at Brooksville Chin Hill, FL see their last 32°F night by February 3; only one in ten is past it by January 1, and one in ten still has one after March 3. Counting the winters with no freeze at all, the risk of a 32°F night after March 3 is under 9% and after February 3 43%. 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 3 in half of years, as early as December 7 one year in ten, and holds off past February 4 one year in ten. A hard freeze of 28°F follows 10 days later, around January 13; in spring the one-in-ten date for 28°F is February 22, 9 days before the 32°F one. On average 6 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 14 days longer, to about February 17, and return around December 14. A 24°F night is unusual: 15% of winters had one.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F99% of yrs | Jan 18 | Jan 30 | Feb 6 | Feb 11 | Feb 17 | Feb 23 | Feb 28 | Mar 6 | Mar 16 |
| 32°F86% of yrs | Jan 1 | Jan 11 | Jan 19 | Jan 27 | Feb 3 | Feb 8 | Feb 15 | Feb 23 | Mar 3 |
| 28°F50% of yrs | Dec 27 | Jan 3 | Jan 10 | Jan 16 | Jan 24 | Jan 30 | Feb 5 | Feb 13 | Feb 22 |
| 24°F15% of yrs | too rare for a date | ||||||||
| 20°F2% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F99% of yrs | Nov 18 | Nov 29 | Dec 4 | Dec 9 | Dec 14 | Dec 20 | Dec 27 | Jan 5 | Jan 16 |
| 32°F86% of yrs | Dec 7 | Dec 15 | Dec 21 | Dec 28 | Jan 3 | Jan 9 | Jan 16 | Jan 25 | Feb 4 |
| 28°F50% of yrs | Dec 18 | Dec 26 | Jan 1 | Jan 6 | Jan 13 | Jan 19 | Jan 27 | Feb 3 | Feb 12 |
| 24°F15% of yrs | too rare for a date | ||||||||
| 20°F2% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Brooksville Chin Hill, 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 34446 →Compare Homosassa with another place →
Weather by month in Homosassa
August is the warmest month at Brooksville Chin Hill, FL, averaging 90°F by day and 73°F at night; January is the coldest at 71°F and 49°F. From April to November the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 39% of years and March still brings one in 10% of years.
Warmth for growing adds up to 8,124 growing degree days a year (base 50°F), fewer than at 53% of the 158 Florida stations. 44% of them (3,596) have built up by the end of June, and August adds the most, 981. Precipitation totals 52.0 inches a year, most in July (8.6") and least in November (1.8"); May to September bring 64% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 71 | 49 | 3.0 | 60% | 3 | 329 |
| Feb | 74 | 51 | 2.9 | 39% | 1 | 355 |
| Mar | 78 | 55 | 3.4 | 10% | <1 | 517 |
| Apr | 83 | 60 | 2.7 | 0% | 0 | 648 |
| May | 88 | 66 | 3.2 | 0% | 0 | 834 |
| Jun | 90 | 71 | 8.1 | 0% | 0 | 912 |
| Jul | 91 | 73 | 8.6 | 0% | 0 | 978 |
| Aug | 90 | 73 | 7.6 | 0% | 0 | 981 |
| Sep | 89 | 71 | 6.0 | 0% | 0 | 906 |
| Oct | 84 | 65 | 2.5 | 0% | 0 | 764 |
| Nov | 78 | 56 | 1.8 | 3% | <1 | 513 |
| Dec | 73 | 51 | 2.2 | 36% | 2 | 387 |
Monthly normals 1991–2020 at Brooksville Chin Hill, FL (240 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, Inverness 3 SE, FL, 14 miles east of Homosassa and 182 feet lower, has a last frost 28 days later (March 3), a first frost 29 days earlier (December 5), a season 50 days shorter.
When it snows in Homosassa, Florida
Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Brooksville Chin Hill, FL, 13.6 miles away, so there is no typical first-snow date to plan around.
Where these figures come from
ZIP 34446 is 14 miles from Brooksville Chin Hill, FL, which stands at 240 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station; its figures are presented in full for 34601 (Brooksville). The 2023 USDA Plant Hardiness Zone Map lists ZIP 34446 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.