USDA Hardiness Zone 9b
Frost Dates for 32266 — Neptune Beach, Florida
NOAA 1991–2020 normals from Jacksonville Beach, FL (10 ft), 2 miles south.
Updated
A freeze (32°F) reaches Neptune Beach in 67% of winters. When it does, the first freeze of winter comes around January 10 and the last freeze of winter around January 31; after March 2 the chance of another is under 7%.
- Last freeze
- January 31
- First freeze
- January 10
- Winters with a freeze
- 67%
- 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 Neptune Beach
In the 67% of winters that bring a 32°F night, half of winters at Jacksonville Beach, FL see their last 32°F night by January 31; only one in ten is past it by January 1, and one in ten still has one after March 2. Counting the winters with no freeze at all, the risk of a 32°F night after March 2 is under 7% and after January 31 33%. The 30 days between the even-odds date and the one-in-ten date is wider than at 82% 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 16 one year in ten, and holds off past February 14 one year in ten. A hard freeze of 28°F is less common: it came in 28% of winters. On average 4 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 9 days longer, to about February 9, and return around January 1. A 24°F night is unusual: 5% of winters had one.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F94% of yrs | Jan 10 | Jan 21 | Jan 30 | Feb 3 | Feb 9 | Feb 16 | Feb 25 | Mar 2 | Mar 10 |
| 32°F67% of yrs | Jan 1 | Jan 11 | Jan 17 | Jan 24 | Jan 31 | Feb 3 | Feb 11 | Feb 21 | Mar 2 |
| 28°F28% of yrs | too rare for a date | ||||||||
| 24°F5% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F94% of yrs | Dec 2 | Dec 8 | Dec 18 | Dec 26 | Jan 1 | Jan 5 | Jan 11 | Jan 17 | Jan 29 |
| 32°F67% of yrs | Dec 16 | Dec 25 | Jan 1 | Jan 6 | Jan 10 | Jan 16 | Jan 24 | Jan 31 | Feb 14 |
| 28°F28% of yrs | too rare for a date | ||||||||
| 24°F5% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Jacksonville 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 32266 →Compare Neptune Beach with another place →
Weather by month in Neptune Beach
July is the warmest month at Jacksonville Beach, FL, averaging 89°F by day and 77°F at night; January is the coldest at 65°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 25% of years.
Warmth for growing adds up to 7,903 growing degree days a year (base 50°F), fewer than at 58% of the 158 Florida stations. 42% of them (3,354) have built up by the end of June, and July adds the most, 1,021. Precipitation totals 52.4 inches a year, most in August (7.5") and least in November (2.5"); May to September bring 56% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 65 | 49 | 3.5 | 44% | 2 | 248 |
| Feb | 68 | 52 | 2.8 | 25% | 1 | 285 |
| Mar | 72 | 57 | 3.2 | 7% | <1 | 457 |
| Apr | 77 | 63 | 3.0 | 0% | 0 | 608 |
| May | 83 | 70 | 2.9 | 0% | 0 | 825 |
| Jun | 87 | 75 | 6.8 | 0% | 0 | 932 |
| Jul | 89 | 77 | 4.9 | 0% | 0 | 1021 |
| Aug | 89 | 77 | 7.5 | 0% | 0 | 1017 |
| Sep | 86 | 76 | 7.2 | 0% | 0 | 922 |
| Oct | 80 | 69 | 5.1 | 0% | 0 | 766 |
| Nov | 73 | 60 | 2.5 | 1% | 0 | 492 |
| Dec | 67 | 53 | 3.0 | 19% | 1 | 330 |
Monthly normals 1991–2020 at Jacksonville Beach, FL (10 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, Mayport Pilot Stn, FL, 6 miles north of Neptune Beach, has a last frost 1 day later (February 1), a first frost 5 days earlier (January 5), a season 13 days shorter.
When it snows in Neptune Beach, Florida
Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Jacksonville Beach, FL, 2.1 miles away, so there is no typical first-snow date to plan around.
Where these figures come from
ZIP 32266 is 2 miles from Jacksonville Beach, FL, which stands at 10 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 32082 (Ponte Vedra Beach). The 2023 USDA Plant Hardiness Zone Map lists ZIP 32266 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.