Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated

Planting zone for 32639 — Gulf Hammock, FL

ZIP code 32639 (Gulf Hammock, Levy County) is in USDA zone 9a: the coldest winter night averages 20 to 25 °F. The median last spring frost is February 28 and the first fall frost December 2.

Where ZIP 32639 is

Outlined: the ZIP code area · tap the map for the zone at any spot · scroll or pinch to zoom

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.

Zone9a20 to 25 °F
Coldest night−6.7 to −3.9 °C
Last frostFeb 28
First frostDec 2
2012 zone9a

Same zone as on the 2012 map. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 9a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Gulf Hammock, FL…

Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.

Frost dates in Gulf Hammock, FL

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostFebruary 28median — 50% chance of a later frost
Safe for tender plantsMarch 22only 10% chance of frost after
First fall frostDecember 2median — 10% chance by Nov 12
Growing season279 daysfrost-free, median

A hard freeze (28 °F) usually ends around February 6 and returns around December 27.

From the NOAA station Usher Twr, FL — 14 miles away, elevation 33 ft. NOAA NCEI U.S. Climate Normals 1991–2020, 32 °F threshold. Low spots and valleys can freeze later in spring than the station.

When to plant vegetables in 32639

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Jan 17 – Jan 31
SpinachSow outdoors · Jan 17 – Feb 7
Broccoli, cabbageStart indoors · Dec 20 – Jan 3
Broccoli, cabbageTransplant · Feb 7 – Feb 21
Onion setsPlant outdoors · Jan 31 – Feb 14
PotatoesPlant outdoors · Feb 7 – Feb 21
LettuceSow outdoors · Jan 31 – Feb 14
Carrots, beetsSow outdoors · Feb 7 – Feb 21
TomatoesStart indoors · Jan 3 – Jan 17
TomatoesTransplant · Mar 7 – Mar 21
Peppers, eggplantStart indoors · Dec 20 – Jan 3
Peppers, eggplantTransplant · Mar 14 – Mar 28
BeansSow outdoors · Mar 7 – Mar 21
Sweet cornSow outdoors · Mar 7 – Mar 21
Cucumbers, squashSow outdoors · Mar 7 – Mar 21
Fall lettuce, spinachSow outdoors · Oct 7 – Oct 21
GarlicPlant cloves · Nov 18 – Dec 23
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Feb 28) and first fall frost (Dec 2) with the rules of thumb U.S. extension services publish. Cool-season crops take a light frost; warm-season crops do best once the soil is above about 60 °F.

When spring arrived in 2026

In 2026, spring leaf-out near 32639 came on Jan 17 — 5 days earlier than the 1991–2020 average (Jan 22).

JanFebMarAprMayJun

The Spring Index marks the day when accumulated warmth is enough for lilac and honeysuckle to leaf out — a widely used signal that the growing season has started. Source: USA National Phenology Network, www.usanpn.org — Spring Indices, first leaf, 2026 (data as of 2026-09-08) and 30-year average 1991–2020 (CC BY 4.0).

Soil in Gulf Hammock, FL

The soil mapped at the center of ZIP 32639 is Wekiva — fine sand, poorly drained.

TextureFine sanddrains and warms fast; dries out and needs more feeding
pH6.7neutral; most vegetables like 6.0–7.0
DrainagePoorly drainedconsider raised beds
Organic matter3.5%moderate
Hydrologic groupC/Dslow when drained; wet otherwise
Farmland classNot prime farmlandUSDA classification

Map unit: Wekiva fine sand, 0 to 2 percent slopes.

Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 32639; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Gulf Hammock, FL

Summer high89 °Faverage high, June
Winter low44 °Faverage low, January
Hot days82days a year at 90 °F or more
Freezing nights15nights a year at 32 °F or less
Growing degree days7,155base 50 °F — the season’s usable heat
Longest day14 h 01 mindaylight on June 21
Shortest day10 h 16 mindaylight on December 21
Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb
Precipitation57.1 inper year, rain and melted snow

Average high and low, by month

30°40°50°60°70°80°90°100°32 °FJanuary: average high 66 °F, low 44 °F 66°44° JanFebruary: average high 70 °F, low 47 °F 70°47° FebMarch: average high 75 °F, low 51 °F 75°51° MarApril: average high 80 °F, low 57 °F 80°57° AprMay: average high 86 °F, low 63 °F 86°63° MayJune: average high 89 °F, low 70 °F 89°70° JunJuly: average high 89 °F, low 72 °F 89°72° JulAugust: average high 89 °F, low 73 °F 89°73° AugSeptember: average high 87 °F, low 70 °F 87°70° SepOctober: average high 81 °F, low 62 °F 81°62° OctNovember: average high 74 °F, low 52 °F 74°52° NovDecember: average high 68 °F, low 47 °F 68°47° Dec

Precipitation by month inches

0″2″4″6″8″10″January: 3.61 in precipitation 3.6 JanFebruary: 3.25 in precipitation 3.3 FebMarch: 3.81 in precipitation 3.8 MarApril: 2.97 in precipitation 3.0 AprMay: 2.78 in precipitation 2.8 MayJune: 8.03 in precipitation 8.0 JunJuly: 8.32 in precipitation 8.3 JulAugust: 9.87 in precipitation 9.9 AugSeptember: 5.82 in precipitation 5.8 SepOctober: 3.17 in precipitation 3.2 OctNovember: 2.22 in precipitation 2.2 NovDecember: 3.25 in precipitation 3.3 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Usher Twr, FL (14 mi away); precipitation: Usher Twr, FL (14 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

2 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

326839a
Otter Creek, FL · 4 mi
344499a
Inglis, FL · 9 mi
344319a
Dunnellon, FL · 13 mi
344989b
Yankeetown, FL · 14 mi
326219a
Bronson, FL · 15 mi
326689a
Morriston, FL · 15 mi
326259b
Cedar Key, FL · 17 mi
326269a
Chiefland, FL · 17 mi

Florida planting zones →

Questions about 32639

What planting zone is ZIP code 32639?

ZIP code 32639 (Gulf Hammock, FL) is in USDA hardiness zone 9a on the 2023 map: the coldest night of an average winter reaches 20 to 25 °F (−6.7 to −3.9 °C).

When is the last frost in Gulf Hammock, FL?

The median last spring frost (32 °F) near 32639 is February 28; after March 22 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Usher Twr station.

When is the first frost in Gulf Hammock, FL?

The median first fall frost near 32639 is December 2, giving a median frost-free growing season of 279 days.

When should I plant tomatoes in 32639?

Start tomato seeds indoors around Jan 3 – Jan 17 and set transplants outside around Mar 7 – Mar 21, one to three weeks after the median last frost.

How much rain and snow does 32639 get?

About 57.1 inches of precipitation a year (NOAA 1991–2020 normals, Usher Twr station).

How hot do summers get in Gulf Hammock, FL?

The average high peaks at 89 °F in June, with about 82 days a year at 90 °F or more.

What kind of soil does 32639 have?

The USDA soil survey maps Wekiva at the center of ZIP 32639: fine sand, poorly drained, pH about 6.7 (neutral).

Did spring come early in Gulf Hammock, FL in 2026?

Spring leaf-out near 32639 came on Jan 17 in 2026, 5 days earlier than the 1991–2020 average (Jan 22), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Gulf Hammock, FL?

Short-day onions: the longest day near 32639 is 14 h 01 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.