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

Planting zone for 32063 — Macclenny, FL

ZIP code 32063 (Macclenny, Baker County) is in USDA zone 9a: the coldest winter night averages 20 to 25 °F. The median last spring frost is March 8 and the first fall frost December 1.

Where ZIP 32063 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 frostMar 8
First frostDec 1
2012 zone8b

Was 8b on the 2012 map — half a zone warmer now. 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 Macclenny, 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 Macclenny, FL

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 8median — 50% chance of a later frost
Safe for tender plantsMarch 31only 10% chance of frost after
First fall frostDecember 1median — 10% chance by Nov 9
Growing season272 daysfrost-free, median

A hard freeze (28 °F) usually ends around February 17 and returns around December 21.

From the NOAA station Glen St Mary 1 W, FL — 4 miles away, elevation 128 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 32063

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Jan 25 – Feb 8
SpinachSow outdoors · Jan 25 – Feb 15
Broccoli, cabbageStart indoors · Dec 28 – Jan 11
Broccoli, cabbageTransplant · Feb 15 – Mar 1
Onion setsPlant outdoors · Feb 8 – Feb 22
PotatoesPlant outdoors · Feb 15 – Mar 1
LettuceSow outdoors · Feb 8 – Feb 22
Carrots, beetsSow outdoors · Feb 15 – Mar 1
TomatoesStart indoors · Jan 11 – Jan 25
TomatoesTransplant · Mar 15 – Mar 29
Peppers, eggplantStart indoors · Dec 28 – Jan 11
Peppers, eggplantTransplant · Mar 22 – Apr 5
BeansSow outdoors · Mar 15 – Mar 29
Sweet cornSow outdoors · Mar 15 – Mar 29
Cucumbers, squashSow outdoors · Mar 15 – Mar 29
Fall lettuce, spinachSow outdoors · Oct 6 – Oct 20
GarlicPlant cloves · Nov 17 – Dec 22
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 8) and first fall frost (Dec 1) 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 32063 came on Jan 17 — 7 days earlier than the 1991–2020 average (Jan 24).

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 Macclenny, FL

The soil mapped at the center of ZIP 32063 is Duplin — loamy fine sand, moderately well drained.

TextureLoamy fine sanddrains and warms fast; dries out and needs more feeding
pH5.3strongly acidic; most vegetables like 6.0–7.0
DrainageModerately well drainednatural drainage class
Organic matter3.5%moderate
Hydrologic groupCwater soaks in slowly
Farmland classprime farmlandUSDA classification

Map unit: Duplin loamy fine sand, 2 to 5 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 32063; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Macclenny, FL

Summer high93 °Faverage high, July
Winter low40 °Faverage low, January
Hot days81days a year at 90 °F or more
Freezing nights28nights a year at 32 °F or less
Growing degree days7,028base 50 °F — the season’s usable heat
Longest day14 h 06 mindaylight on June 21
Shortest day10 h 11 mindaylight on December 21
Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb
Precipitation51.4 inper year, rain and melted snow

Average high and low, by month

30°40°50°60°70°80°90°100°32 °FJanuary: average high 67 °F, low 40 °F 67°40° JanFebruary: average high 71 °F, low 44 °F 71°44° FebMarch: average high 76 °F, low 48 °F 76°48° MarApril: average high 82 °F, low 53 °F 82°53° AprMay: average high 88 °F, low 61 °F 88°61° MayJune: average high 91 °F, low 69 °F 91°69° JunJuly: average high 93 °F, low 71 °F 93°71° JulAugust: average high 92 °F, low 71 °F 92°71° AugSeptember: average high 89 °F, low 68 °F 89°68° SepOctober: average high 83 °F, low 59 °F 83°59° OctNovember: average high 75 °F, low 49 °F 75°49° NovDecember: average high 69 °F, low 43 °F 69°43° Dec

Precipitation by month inches

0″2″4″6″8″January: 3.57 in precipitation 3.6 JanFebruary: 2.88 in precipitation 2.9 FebMarch: 3.50 in precipitation 3.5 MarApril: 3.27 in precipitation 3.3 AprMay: 3.31 in precipitation 3.3 MayJune: 7.63 in precipitation 7.6 JunJuly: 6.35 in precipitation 6.3 JulAugust: 6.30 in precipitation 6.3 AugSeptember: 6.17 in precipitation 6.2 SepOctober: 3.48 in precipitation 3.5 OctNovember: 2.37 in precipitation 2.4 NovDecember: 2.60 in precipitation 2.6 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Glen St Mary 1 W, FL (4 mi away); precipitation: Glen St. Mary 1.7 N, FL (3 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 9a.

320409a
Glen Saint Mary, FL · 7 mi
322349a
Jacksonville, FL · 8 mi
320589a
Lawtey, FL · 11 mi
320879a
Sanderson, FL · 12 mi
320839a
Raiford, FL · 13 mi
320099a
Bryceville, FL · 14 mi
315629a
Saint George, GA · 14 mi
322219a
Jacksonville, FL · 14 mi

Florida planting zones →

Questions about 32063

What planting zone is ZIP code 32063?

ZIP code 32063 (Macclenny, 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 Macclenny, FL?

The median last spring frost (32 °F) near 32063 is March 8; after March 31 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Glen St Mary 1 W station.

When is the first frost in Macclenny, FL?

The median first fall frost near 32063 is December 1, giving a median frost-free growing season of 272 days.

When should I plant tomatoes in 32063?

Start tomato seeds indoors around Jan 11 – Jan 25 and set transplants outside around Mar 15 – Mar 29, one to three weeks after the median last frost.

How much rain and snow does 32063 get?

About 51.4 inches of precipitation a year (NOAA 1991–2020 normals, Glen St. Mary 1.7 N station).

How hot do summers get in Macclenny, FL?

The average high peaks at 93 °F in July, with about 81 days a year at 90 °F or more.

What kind of soil does 32063 have?

The USDA soil survey maps Duplin at the center of ZIP 32063: loamy fine sand, moderately well drained, pH about 5.3 (strongly acidic).

Did spring come early in Macclenny, FL in 2026?

Spring leaf-out near 32063 came on Jan 17 in 2026, 7 days earlier than the 1991–2020 average (Jan 24), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Macclenny, FL?

Short-day onions: the longest day near 32063 is 14 h 06 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 32063 change?

Yes. The 2012 USDA map put 32063 in zone 8b; the 2023 map puts it in zone 9a. The newer map uses 1991–2020 data and more weather stations.