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

Planting zone for Tampa, FL

Tampa, FL is in USDA zones 9b to 10a across its 55 ZIP codes.

Tampa on the zone map

Outlined: its 27 ZIP code areas · 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.

Zones9b–10a25 to 35 °F
ZIP codes55
Last frostrare
First frostrare
Growing seasonall year

9b 13 ZIPs   10a 42 ZIPs

Frost forecast — next 7 nights

live from the National Weather Service

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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 Tampa Intl Airport, FL, elevation 20 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 33622 came on Jan 11 — 4 days earlier than the 1991–2020 average (Jan 15).

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 9b in Florida

477 plants native to the lower 48 states, recorded in Florida, and rated by the USDA to survive 25 °F or colder — the bottom of zone 9b. Each links to its USDA PLANTS profile.

Trees 66

Shrubs 114

Wildflowers & perennials 146

Grasses 131

Vines 12

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 Tampa, FL.

Soil in Tampa, FL

The soil mapped at the center of ZIP 33622 is Matlacha — gravelly fine sand, somewhat poorly drained. Much of the area is built over (urban land); this is the natural soil underneath.

TextureGravelly fine sanddrains and warms fast; dries out and needs more feeding
pH7.0neutral; most vegetables like 6.0–7.0
DrainageSomewhat poorly drainedconsider raised beds
Organic matter1%low — add compost
Hydrologic groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: Urban land, 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 33622; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Tampa, FL

Summer high91 °Faverage high, June
Winter low53 °Faverage low, January
Hot days94days a year at 90 °F or more
Freezing nights1nights a year at 32 °F or less
Growing degree days8,987base 50 °F — the season’s usable heat
Longest day13 h 55 mindaylight on June 21
Shortest day10 h 22 mindaylight on December 21
Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb
Precipitation54.5 inper year, rain and melted snow

Average high and low, by month

40°50°60°70°80°90°100°January: average high 71 °F, low 53 °F 71°53° JanFebruary: average high 74 °F, low 56 °F 74°56° FebMarch: average high 78 °F, low 59 °F 78°59° MarApril: average high 83 °F, low 65 °F 83°65° AprMay: average high 88 °F, low 71 °F 88°71° MayJune: average high 91 °F, low 75 °F 91°75° JunJuly: average high 91 °F, low 77 °F 91°77° JulAugust: average high 91 °F, low 77 °F 91°77° AugSeptember: average high 90 °F, low 75 °F 90°75° SepOctober: average high 86 °F, low 69 °F 86°69° OctNovember: average high 79 °F, low 61 °F 79°61° NovDecember: average high 74 °F, low 56 °F 74°56° Dec

Precipitation by month inches

0″2″4″6″8″10″January: 2.95 in precipitation 3.0 JanFebruary: 2.34 in precipitation 2.3 FebMarch: 2.72 in precipitation 2.7 MarApril: 2.62 in precipitation 2.6 AprMay: 3.04 in precipitation 3.0 MayJune: 8.41 in precipitation 8.4 JunJuly: 8.38 in precipitation 8.4 JulAugust: 9.54 in precipitation 9.5 AugSeptember: 7.23 in precipitation 7.2 SepOctober: 3.05 in precipitation 3.0 OctNovember: 1.59 in precipitation 1.6 NovDecember: 2.63 in precipitation 2.6 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Tampa Intl Airport, FL (5 mi away); precipitation: Tampa 4.8 Sw, FL (4 mi away). Daylight is calculated from latitude.

ZIP codes in Tampa

Florida planting zones →

Questions about Tampa

What planting zone is Tampa, FL?

Tampa, FL is in USDA hardiness zones 9b to 10a on the 2023 map (9b: 25 to 30 °F; 10a: 30 to 35 °F).

What kind of onions grow in Tampa, FL?

Short-day onions: the longest day is 13 h 55 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

How much rain and snow does Tampa, FL get?

About 54.5 inches of precipitation a year (NOAA 1991–2020 normals).