Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 29, 2026

Planting zone for 34145 — Marco Island, FL

ZIP code 34145 (Marco Island, Collier County) is in USDA zone 10b: the coldest winter night averages 35 to 40 °F.

Where ZIP 34145 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.

Zone10b35 to 40 °F

Coldest night1.7 to 4.4 °C

Last frostrare

First frostrare

2012 zone10a

Was 10a 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 10b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Marco Island, 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

A 32 °F frost doesn't happen here in most winters. At the nearest station (NOAA station Naples, FL — 17 miles away, elevation 39 ft) the median growing season is 365 days. When frost does come, it is a midwinter night or two; cover tender plants when a freeze is forecast.

Frost data: NOAA NCEI U.S. Climate Normals 1991–2020.

When spring arrived in 2026

In 2026, spring leaf-out near 34145 came on Jan 10 — 3 days earlier than the 1991–2020 average (Jan 13).

average
Jan 132026
Jan 10

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).

Native plants for zone 10b in Florida

497 plants native to the lower 48 states, recorded in Florida, and rated by the USDA to survive 35 °F or colder — the bottom of zone 10b. Each links to its USDA PLANTS profile.

Source: USDA, NRCS. 2026. The PLANTS Database (plants.usda.gov), National Plant Data Team — state distribution, native status and the “Temperature, Minimum” characteristic. Check light, moisture and soil needs before buying; local nurseries and your state native plant society can confirm what thrives in Marco Island, FL.

Soil in Marco Island, FL

The soil mapped at the center of ZIP 34145 is St. Augustine — paragravelly fine sand, somewhat poorly drained.

TextureParagravelly fine sanddrains and warms fast; dries out and needs more feeding

pH7.8slightly alkaline; most vegetables like 6.0–7.0

DrainageSomewhat poorly drainedconsider raised beds

Organic matter0.75%low — add compost

Hydrologic groupAwater soaks in fast

Farmland classNot prime farmlandUSDA classification

Map unit: St. Augustine, organic substratum-Urban land complex, 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 34145; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Marco Island, FL

Summer high92 °Faverage high, August

Winter low55 °Faverage low, January

Hot days81days a year at 90 °F or more

Freezing nights1nights a year at 32 °F or less

Growing degree days9,261base 50 °F — the season’s usable heat

Longest day13 h 46 mindaylight on June 21

Shortest day10 h 31 mindaylight on December 21

Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb

Precipitation53.3 inper year, rain and melted snow

Average high and low, by month

Precipitation by month inches

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Marco Is, FL (3 mi away); precipitation: Marco Is, FL (3 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 10b.

3414010b

Goodland, FL · 2 mi

3414610b

Marco Island, FL · 3 mi

All 2 ZIP codes in Marco Island → · Florida planting zones →

Questions about 34145

What planting zone is ZIP code 34145?

ZIP code 34145 (Marco Island, FL) is in USDA hardiness zone 10b on the 2023 map: the coldest night of an average winter reaches 35 to 40 °F (1.7 to 4.4 °C).

How much rain and snow does 34145 get?

About 53.3 inches of precipitation a year (NOAA 1991–2020 normals, Marco Is station).

How hot do summers get in Marco Island, FL?

The average high peaks at 92 °F in August, with about 81 days a year at 90 °F or more.

What kind of soil does 34145 have?

The USDA soil survey maps St. Augustine at the center of ZIP 34145: paragravelly fine sand, somewhat poorly drained, pH about 7.8 (slightly alkaline).

Did spring come early in Marco Island, FL in 2026?

Spring leaf-out near 34145 came on Jan 10 in 2026, 3 days earlier than the 1991–2020 average (Jan 13), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Marco Island, FL?

Short-day onions: the longest day near 34145 is 13 h 46 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 34145 change?

Yes. The 2012 USDA map put 34145 in zone 10a; the 2023 map puts it in zone 10b. The newer map uses 1991–2020 data and more weather stations.