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

Planting zone for 25402 — Martinsburg, WV

ZIP code 25402 (Martinsburg, Berkeley County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 17 and the first fall frost October 23.

Where ZIP 25402 is

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.

Zone7a0 to 5 °F
Coldest night−17.8 to −15 °C
Last frostApr 17
First frostOct 23
2012 zone6b

Was 6b 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 7a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Martinsburg, WV…

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 Martinsburg, WV

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 17median — 50% chance of a later frost
Safe for tender plantsMay 1only 10% chance of frost after
First fall frostOctober 23median — 10% chance by Oct 8
Growing season187 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 5 and returns around November 1.

From the NOAA station Martinsburg 2, WV — within 1 mile, elevation 459 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 25402

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 6 – Mar 20
SpinachSow outdoors · Mar 6 – Mar 27
Broccoli, cabbageStart indoors · Feb 6 – Feb 20
Broccoli, cabbageTransplant · Mar 27 – Apr 10
Onion setsPlant outdoors · Mar 20 – Apr 3
PotatoesPlant outdoors · Mar 27 – Apr 10
LettuceSow outdoors · Mar 20 – Apr 3
Carrots, beetsSow outdoors · Mar 27 – Apr 10
TomatoesStart indoors · Feb 20 – Mar 6
TomatoesTransplant · Apr 24 – May 8
Peppers, eggplantStart indoors · Feb 6 – Feb 20
Peppers, eggplantTransplant · May 1 – May 15
BeansSow outdoors · Apr 24 – May 8
Sweet cornSow outdoors · Apr 24 – May 8
Cucumbers, squashSow outdoors · Apr 24 – May 8
Fall lettuce, spinachSow outdoors · Aug 28 – Sep 11
GarlicPlant cloves · Oct 9 – Nov 13
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 17) and first fall frost (Oct 23) 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 25402 came on Mar 12 — 8 days earlier than the 1991–2020 average (Mar 20).

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 7a in West Virginia

515 plants native to the lower 48 states, recorded in West Virginia, and rated by the USDA to survive 0 °F or colder — the bottom of zone 7a. Each links to its USDA PLANTS profile.

Trees 69

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican beech80 ft · blooms mid spring · low shade tolerance · to −44 °FAmerican chestnut115 ft · blooms early summer · high shade tolerance · to −33 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °Farborvitae50 ft · blooms mid spring · medium shade tolerance · to −33 °F

Shrubs 103

alderleaf buckthorn3 ft · blooms late spring · low shade tolerance · to −33 °FAllegheny serviceberry35 ft · blooms early spring · low shade tolerance · to −38 °Falternateleaf dogwood25 ft · blooms mid spring · low shade tolerance · to −47 °FAmerican black currant3 ft · blooms early spring · to −46 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °FAmerican holly40 ft · blooms mid spring · low shade tolerance · to −20 °F

Wildflowers & perennials 181

American bur-reed3 ft · blooms indeterminate · medium shade tolerance · to −33 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °FAmerican pokeweed7 ft · blooms mid summer · low shade tolerance · to −33 °FAmerican speedwell0.8 ft · blooms mid summer · low shade tolerance · to −38 °FAmerican vetch1.3 ft · blooms late spring · high shade tolerance · to −38 °FAmerican water horehound1.8 ft · blooms early summer · low shade tolerance · to −38 °F

Grasses 137

arctic brome3 ft · blooms early summer · low shade tolerance · to −33 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °FBailey's sedge2.1 ft · blooms late spring · low shade tolerance · to −33 °Fbeaked spikerush3 ft · blooms late spring · high shade tolerance · to −28 °Fbig bluestem6 ft · blooms summer · high shade tolerance · to −46 °Fbitter panicgrass5 ft · blooms mid summer · high shade tolerance · to −18 °F

Vines 12

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °FAmerican wisteria50 ft · blooms spring · low shade tolerance · to −3 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Ffrost grape83 ft · blooms late spring · medium shade tolerance · to −23 °Fgraybark grape50 ft · blooms late spring · medium shade tolerance · to −8 °Fheartleaf peppervine2 ft · blooms late spring · low shade tolerance · to −8 °F

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 Martinsburg, WV.

Soil in Martinsburg, WV

The center of ZIP 25402 is mapped as Urban land: built-over ground without natural soil data. Garden soil here is usually imported or disturbed — test before you plant.

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 25402; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Martinsburg, WV

Summer high87 °Faverage high, July
Winter low23 °Faverage low, January
Hot days29days a year at 90 °F or more
Freezing nights119nights a year at 32 °F or less
Growing degree days3,520base 50 °F — the season’s usable heat
Longest day14 h 57 mindaylight on June 21
Shortest day9 h 23 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation41.4 inper year, rain and melted snow

Average high and low, by month

10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 42 °F, low 23 °F 42°23° JanFebruary: average high 45 °F, low 24 °F 45°24° FebMarch: average high 54 °F, low 30 °F 54°30° MarApril: average high 66 °F, low 40 °F 66°40° AprMay: average high 75 °F, low 51 °F 75°51° MayJune: average high 83 °F, low 60 °F 83°60° JunJuly: average high 87 °F, low 64 °F 87°64° JulAugust: average high 86 °F, low 62 °F 86°62° AugSeptember: average high 79 °F, low 54 °F 79°54° SepOctober: average high 67 °F, low 43 °F 67°43° OctNovember: average high 56 °F, low 33 °F 56°33° NovDecember: average high 45 °F, low 27 °F 45°27° Dec

Precipitation by month inches

0″1″2″3″4″5″January: 2.82 in precipitation 2.8 JanFebruary: 2.60 in precipitation 2.6 FebMarch: 3.73 in precipitation 3.7 MarApril: 3.60 in precipitation 3.6 AprMay: 4.20 in precipitation 4.2 MayJune: 3.51 in precipitation 3.5 JunJuly: 4.12 in precipitation 4.1 JulAugust: 3.04 in precipitation 3.0 AugSeptember: 4.17 in precipitation 4.2 SepOctober: 3.35 in precipitation 3.4 OctNovember: 3.01 in precipitation 3.0 NovDecember: 3.28 in precipitation 3.3 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Martinsburg 2, WV (within 1 mile); precipitation: Martinsburg 2, WV (within 1 mile). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 7a.

254017a
Martinsburg, WV · <1 mi
254037a
Martinsburg, WV · 3 mi
254057a
Martinsburg, WV · 3 mi
254047a
Martinsburg, WV · 4 mi
254287a
Inwood, WV · 6 mi
254437a
Shepherdstown, WV · 8 mi
254277a
Hedgesville, WV · 8 mi
254307a
Kearneysville, WV · 9 mi

All 5 ZIP codes in Martinsburg → · West Virginia planting zones →

Questions about 25402

What planting zone is ZIP code 25402?

ZIP code 25402 (Martinsburg, WV) is in USDA hardiness zone 7a on the 2023 map: the coldest night of an average winter reaches 0 to 5 °F (−17.8 to −15 °C).

When is the last frost in Martinsburg, WV?

The median last spring frost (32 °F) near 25402 is April 17; after May 1 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Martinsburg 2 station.

When is the first frost in Martinsburg, WV?

The median first fall frost near 25402 is October 23, giving a median frost-free growing season of 187 days.

When should I plant tomatoes in 25402?

Start tomato seeds indoors around Feb 20 – Mar 6 and set transplants outside around Apr 24 – May 8, one to three weeks after the median last frost.

How much rain and snow does 25402 get?

About 41.4 inches of precipitation a year (NOAA 1991–2020 normals, Martinsburg 2 station).

How hot do summers get in Martinsburg, WV?

The average high peaks at 87 °F in July, with about 29 days a year at 90 °F or more.

Did spring come early in Martinsburg, WV in 2026?

Spring leaf-out near 25402 came on Mar 12 in 2026, 8 days earlier than the 1991–2020 average (Mar 20), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Martinsburg, WV?

Intermediate onions: the longest day near 25402 is 14 h 57 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 25402 change?

Yes. The 2012 USDA map put 25402 in zone 6b; the 2023 map puts it in zone 7a. The newer map uses 1991–2020 data and more weather stations.