USDA Hardiness Zone 9a
Frost Dates for 32097 — Yulee, Florida
NOAA 1991–2020 normals from Fernandina Beach, FL (49 ft), 9 miles east.
Updated
A freeze (32°F) reaches Yulee in 85% of winters. When it does, the first freeze of winter comes around January 4 and the last freeze of winter around February 2; after March 1 the chance of another is under 9%.
- Last freeze
- February 2
- First freeze
- January 4
- Winters with a freeze
- 85%
- Hardiness zone
- 9a
50%, in freezing years
50%, in freezing years
32°F or below, 1991–2020
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 20 observed
NOAA normal
Frost risk by date in Yulee
In the 85% of winters that bring a 32°F night, half of winters at Fernandina Beach, FL see their last 32°F night by February 2; only one in ten is past it by January 2, and one in ten still has one after March 1. Counting the winters with no freeze at all, the risk of a 32°F night after March 1 is under 9% and after February 2 43%. 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 4 in half of years, as early as December 10 one year in ten, and holds off past February 3 one year in ten. A hard freeze of 28°F follows 9 days later, around January 13; in spring the one-in-ten date for 28°F is February 19, 10 days before the 32°F one. On average 5 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 18, and return around December 19. A 24°F night is unusual: 20% of winters had one.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F99% of yrs | Jan 19 | Jan 31 | Feb 6 | Feb 12 | Feb 18 | Feb 23 | Feb 28 | Mar 5 | Mar 13 |
| 32°F85% of yrs | Jan 2 | Jan 14 | Jan 22 | Jan 29 | Feb 2 | Feb 8 | Feb 14 | Feb 21 | Mar 1 |
| 28°F52% of yrs | Dec 31 | Jan 7 | Jan 13 | Jan 19 | Jan 26 | Jan 31 | Feb 2 | Feb 9 | Feb 19 |
| 24°F20% of yrs | too rare for a date | ||||||||
| 20°F3% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F99% of yrs | Nov 26 | Dec 1 | Dec 7 | Dec 13 | Dec 19 | Dec 25 | Jan 1 | Jan 6 | Jan 14 |
| 32°F85% of yrs | Dec 10 | Dec 19 | Dec 27 | Jan 1 | Jan 4 | Jan 8 | Jan 15 | Jan 24 | Feb 3 |
| 28°F52% of yrs | Dec 19 | Dec 29 | Jan 2 | Jan 8 | Jan 13 | Jan 18 | Jan 26 | Feb 1 | Feb 10 |
| 24°F20% of yrs | too rare for a date | ||||||||
| 20°F3% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Fernandina Beach, 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 32097 →Compare Yulee with another place →
Weather by month in Yulee
July is the warmest month at Fernandina Beach, FL, averaging 91°F by day and 75°F at night; January is the coldest at 64°F and 45°F. From March to November the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 41% of years.
Warmth for growing adds up to 7,424 growing degree days a year (base 50°F), fewer than at 67% of the 158 Florida stations. 42% of them (3,118) have built up by the end of June, and July adds the most, 1,017. Precipitation totals 50.0 inches a year, most in September (7.2") and least in November (1.9"); May to September bring 55% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 64 | 45 | 3.2 | 62% | 3 | 196 |
| Feb | 67 | 49 | 3.1 | 41% | 1 | 231 |
| Mar | 72 | 54 | 3.3 | 9% | <1 | 413 |
| Apr | 77 | 60 | 3.0 | 0% | 0 | 558 |
| May | 84 | 68 | 2.7 | 0% | 0 | 800 |
| Jun | 88 | 73 | 6.1 | 0% | 0 | 921 |
| Jul | 91 | 75 | 5.0 | 0% | 0 | 1017 |
| Aug | 90 | 75 | 6.4 | 0% | 0 | 998 |
| Sep | 86 | 73 | 7.2 | 0% | 0 | 888 |
| Oct | 80 | 65 | 5.0 | 0% | 0 | 704 |
| Nov | 72 | 56 | 1.9 | 2% | 0 | 430 |
| Dec | 66 | 49 | 3.1 | 32% | 1 | 270 |
Monthly normals 1991–2020 at Fernandina Beach, FL (49 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, Jacksonville, FL, 12 miles southwest of Yulee, has a last frost 23 days later (February 25), a first frost 28 days earlier (December 7), a season 45 days shorter.
When it snows in Yulee, Florida
Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Fernandina Beach, FL, 8.6 miles away, so there is no typical first-snow date to plan around.
Where these figures come from
ZIP 32097 is 9 miles from Fernandina Beach, FL, which stands at 49 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 32034 (Fernandina Beach). The 2023 USDA Plant Hardiness Zone Map lists ZIP 32097 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.