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

Planting zone for 25264 — Mount Alto, WV

ZIP code 25264 (Mount Alto, Jackson County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 28 and the first fall frost October 19.

Where ZIP 25264 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.

Zone6b−5 to 0 °F

Coldest night−20.6 to −17.8 °C

Last frostApr 28

First frostOct 19

2012 zone6b

Same zone as on the 2012 map. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 6b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Mount Alto, 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 Mount Alto, WV

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostApril 28median — 50% chance of a later frost

Safe for tender plantsMay 14only 10% chance of frost after

First fall frostOctober 19median — 10% chance by Oct 6

Growing season173 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 17 and returns around October 28.

From the NOAA station Southside 3 Nnw, WV — 9 miles away, elevation 577 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 25264

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Mar 17 – Mar 31

SpinachSow outdoors · Mar 17 – Apr 7

Broccoli, cabbageStart indoors · Feb 17 – Mar 3

Broccoli, cabbageTransplant · Apr 7 – Apr 21

Onion setsPlant outdoors · Mar 31 – Apr 14

PotatoesPlant outdoors · Apr 7 – Apr 21

LettuceSow outdoors · Mar 31 – Apr 14

Carrots, beetsSow outdoors · Apr 7 – Apr 21

TomatoesStart indoors · Mar 3 – Mar 17

TomatoesTransplant · May 5 – May 19

Peppers, eggplantStart indoors · Feb 17 – Mar 3

Peppers, eggplantTransplant · May 12 – May 26

BeansSow outdoors · May 5 – May 19

Sweet cornSow outdoors · May 5 – May 19

Cucumbers, squashSow outdoors · May 5 – May 19

Fall lettuce, spinachSow outdoors · Aug 24 – Sep 7

GarlicPlant cloves · Oct 5 – Nov 9

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 28) and first fall frost (Oct 19) 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 25264 came on Mar 8 — 9 days earlier than the 1991–2020 average (Mar 17).

average
Mar 172026
Mar 8

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 6b in West Virginia

506 plants native to the lower 48 states, recorded in West Virginia, and rated by the USDA to survive −5 °F or colder — the bottom of zone 6b. 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 Mount Alto, WV.

Soil in Mount Alto, WV

The soil mapped at the center of ZIP 25264 is Upshur — silt loam, well drained.

TextureSilt loama good balance for most vegetables

pH5.5moderately acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter1.75%low — add compost

Hydrologic groupDwater soaks in very slowly

Farmland classNot prime farmlandUSDA classification

Map unit: Upshur silt loam, 8 to 15 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 25264; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Mount Alto, WV

Summer high85 °Faverage high, July

Winter low19 °Faverage low, January

Hot days16days a year at 90 °F or more

Freezing nights131nights a year at 32 °F or less

Growing degree days3,244base 50 °F — the season’s usable heat

Longest day14 h 54 mindaylight on June 21

Shortest day9 h 26 mindaylight on December 21

Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully

Precipitation44.2 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: Southside 3 Nnw, WV (9 mi away); precipitation: Racine Locks & Dam, WV (4 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6b.

252396b

Cottageville, WV · 3 mi

Point Pleasant, WV · 9 mi

West Virginia planting zones →

Questions about 25264

What planting zone is ZIP code 25264?

ZIP code 25264 (Mount Alto, WV) is in USDA hardiness zone 6b on the 2023 map: the coldest night of an average winter reaches −5 to 0 °F (−20.6 to −17.8 °C).

When is the last frost in Mount Alto, WV?

The median last spring frost (32 °F) near 25264 is April 28; after May 14 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Southside 3 Nnw station.

When is the first frost in Mount Alto, WV?

The median first fall frost near 25264 is October 19, giving a median frost-free growing season of 173 days.

When should I plant tomatoes in 25264?

Start tomato seeds indoors around Mar 3 – Mar 17 and set transplants outside around May 5 – May 19, one to three weeks after the median last frost.

How much rain and snow does 25264 get?

About 44.2 inches of precipitation a year (NOAA 1991–2020 normals, Racine Locks & Dam station).

How hot do summers get in Mount Alto, WV?

The average high peaks at 85 °F in July, with about 16 days a year at 90 °F or more.

What kind of soil does 25264 have?

The USDA soil survey maps Upshur at the center of ZIP 25264: silt loam, well drained, pH about 5.5 (moderately acidic).

Did spring come early in Mount Alto, WV in 2026?

Spring leaf-out near 25264 came on Mar 8 in 2026, 9 days earlier than the 1991–2020 average (Mar 17), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Mount Alto, WV?

Intermediate onions: the longest day near 25264 is 14 h 54 min, so day-neutral types bulb best; long-day varieties may not bulb fully.