USDA Hardiness Zone 10a
Frost Dates for 34773 — Harmony, Florida
NOAA 1991–2020 normals from Kenansville, FL (61 ft), 20 miles south.
Updated
A freeze (32°F) reaches Harmony in 62% of winters. When it does, the first freeze of winter comes around January 10 and the last freeze of winter around January 26; after February 22 the chance of another is under 6%.
- Last freeze
- January 26
- First freeze
- January 10
- Winters with a freeze
- 62%
- 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 Harmony
In the 62% of winters that bring a 32°F night, half of winters at Kenansville, FL see their last 32°F night by January 26; only one in ten is past it by January 2, and one in ten still has one after February 22. Counting the winters with no freeze at all, the risk of a 32°F night after February 22 is under 6% and after January 26 31%. The 27 days between the even-odds date and the one-in-ten date is wider than at 58% 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 10 in half of years, as early as December 20 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 22% 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 11 days longer, to about February 6, and return around January 3. A 24°F night is unusual: 3% of winters had one.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F94% of yrs | Jan 9 | Jan 21 | Jan 29 | Feb 1 | Feb 6 | Feb 12 | Feb 18 | Feb 25 | Mar 6 |
| 32°F62% of yrs | Jan 2 | Jan 8 | Jan 14 | Jan 20 | Jan 26 | Jan 31 | Feb 4 | Feb 11 | Feb 22 |
| 28°F22% of yrs | too rare for a date | ||||||||
| 24°F3% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F94% of yrs | Dec 4 | Dec 14 | Dec 24 | Dec 29 | Jan 3 | Jan 7 | Jan 14 | Jan 22 | Feb 1 |
| 32°F62% of yrs | Dec 20 | Dec 29 | Jan 2 | Jan 6 | Jan 10 | Jan 16 | Jan 23 | Jan 30 | Feb 7 |
| 28°F22% of yrs | too rare for a date | ||||||||
| 24°F3% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Kenansville, 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 34773 →Compare Harmony with another place →
Compared with the next station
The nearest other station, Melbourne WFO, FL, 21 miles east of Harmony, has a last frost 2 days earlier (January 24), a first frost 1 day earlier (January 9), a season 5 days longer.
When it snows in Harmony, Florida
Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Melbourne WFO, FL, 21.4 miles away, so there is no typical first-snow date to plan around.
Where these figures come from
ZIP 34773 is 20 miles from Kenansville, FL, which stands at 61 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 34773 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.