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

Planting zone for 19096 — Wynnewood, PA

ZIP code 19096 (Wynnewood, Montgomery County) is in USDA zone 7b: the coldest winter night averages 5 to 10 °F. The median last spring frost is March 30 and the first fall frost November 17.

Where ZIP 19096 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.

Zone7b5 to 10 °F

Coldest night−15 to −12.2 °C

Last frostMar 30

First frostNov 17

2012 zone7a

Was 7a 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 7b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Wynnewood, PA…

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 Wynnewood, PA

JanFebMarAprMayJunJulAugSepOctNovDec

Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free

Last spring frostMarch 30median — 50% chance of a later frost

Safe for tender plantsApril 12only 10% chance of frost after

First fall frostNovember 17median — 10% chance by Nov 4

Growing season232 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 17 and returns around November 29.

From the NOAA station Phila Franklin Inst, PA — 6 miles away, elevation 59 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 19096

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 16 – Mar 2

SpinachSow outdoors · Feb 16 – Mar 9

Broccoli, cabbageStart indoors · Jan 19 – Feb 2

Broccoli, cabbageTransplant · Mar 9 – Mar 23

Onion setsPlant outdoors · Mar 2 – Mar 16

PotatoesPlant outdoors · Mar 9 – Mar 23

LettuceSow outdoors · Mar 2 – Mar 16

Carrots, beetsSow outdoors · Mar 9 – Mar 23

TomatoesStart indoors · Feb 2 – Feb 16

TomatoesTransplant · Apr 6 – Apr 20

Peppers, eggplantStart indoors · Jan 19 – Feb 2

Peppers, eggplantTransplant · Apr 13 – Apr 27

BeansSow outdoors · Apr 6 – Apr 20

Sweet cornSow outdoors · Apr 6 – Apr 20

Cucumbers, squashSow outdoors · Apr 6 – Apr 20

Fall lettuce, spinachSow outdoors · Sep 22 – Oct 6

GarlicPlant cloves · Nov 3 – Dec 8

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 30) and first fall frost (Nov 17) 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 19096 came on Mar 15 — 7 days earlier than the 1991–2020 average (Mar 22).

average
Mar 222026
Mar 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 7b in Pennsylvania

625 plants native to the lower 48 states, recorded in Pennsylvania, and rated by the USDA to survive 5 °F or colder — the bottom of zone 7b. 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 Wynnewood, PA.

Soil in Wynnewood, PA

The soil mapped at the center of ZIP 19096 is Glenelg — channery silt loam, well drained. Much of the area is built over (urban land); this is the natural soil underneath.

TextureChannery silt loama good balance for most vegetables

pH5.4strongly acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter2%moderate

Hydrologic groupBwater soaks in moderately

Farmland classNot prime farmlandUSDA classification

Map unit: Urban land-Glenelg complex, 0 to 8 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 19096; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Wynnewood, PA

Summer high89 °Faverage high, July

Winter low28 °Faverage low, January

Hot days40days a year at 90 °F or more

Freezing nights62nights a year at 32 °F or less

Growing degree days4,429base 50 °F — the season’s usable heat

Longest day15 h 01 mindaylight on June 21

Shortest day9 h 19 mindaylight on December 21

Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)

Precipitation50.5 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: Phila Franklin Inst, PA (6 mi away); precipitation: Ardmore 0.5 Nw, PA (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 7b.

190037b

Ardmore, PA · 1 mi

190667b

Merion Station, PA · 1 mi

191517b

Philadelphia, PA · 2 mi

190727b

Narberth, PA · 2 mi

190047b

Bala Cynwyd, PA · 2 mi

Upper Darby, PA · 3 mi

Pennsylvania planting zones →

Questions about 19096

What planting zone is ZIP code 19096?

ZIP code 19096 (Wynnewood, PA) is in USDA hardiness zone 7b on the 2023 map: the coldest night of an average winter reaches 5 to 10 °F (−15 to −12.2 °C).

When is the last frost in Wynnewood, PA?

The median last spring frost (32 °F) near 19096 is March 30; after April 12 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Phila Franklin Inst station.

When is the first frost in Wynnewood, PA?

The median first fall frost near 19096 is November 17, giving a median frost-free growing season of 232 days.

When should I plant tomatoes in 19096?

Start tomato seeds indoors around Feb 2 – Feb 16 and set transplants outside around Apr 6 – Apr 20, one to three weeks after the median last frost.

How much rain and snow does 19096 get?

About 50.5 inches of precipitation a year (NOAA 1991–2020 normals, Ardmore 0.5 Nw station).

How hot do summers get in Wynnewood, PA?

The average high peaks at 89 °F in July, with about 40 days a year at 90 °F or more.

What kind of soil does 19096 have?

The USDA soil survey maps Glenelg at the center of ZIP 19096: channery silt loam, well drained, pH about 5.4 (strongly acidic).

Did spring come early in Wynnewood, PA in 2026?

Spring leaf-out near 19096 came on Mar 15 in 2026, 7 days earlier than the 1991–2020 average (Mar 22), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Wynnewood, PA?

Long-day onions: the longest day near 19096 is 15 h 01 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 19096 change?

Yes. The 2012 USDA map put 19096 in zone 7a; the 2023 map puts it in zone 7b. The newer map uses 1991–2020 data and more weather stations.