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

Planting zone for 25841 — Flat Top, WV

ZIP code 25841 (Flat Top, Mercer County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 30 and the first fall frost October 10.

Where ZIP 25841 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.

Zone7a0 to 5 °F
Coldest night−17.8 to −15 °C
Last frostApr 30
First frostOct 10
2012 zone6a

Was 6a on the 2012 map — a full 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 Flat Top, 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 Flat Top, WV

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 30median — 50% chance of a later frost
Safe for tender plantsMay 19only 10% chance of frost after
First fall frostOctober 10median — 10% chance by Sep 27
Growing season161 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 16 and returns around October 19.

From the NOAA station Athens, WV — 10 miles away, elevation 2,497 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 25841

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 19 – Apr 2
SpinachSow outdoors · Mar 19 – Apr 9
Broccoli, cabbageStart indoors · Feb 19 – Mar 5
Broccoli, cabbageTransplant · Apr 9 – Apr 23
Onion setsPlant outdoors · Apr 2 – Apr 16
PotatoesPlant outdoors · Apr 9 – Apr 23
LettuceSow outdoors · Apr 2 – Apr 16
Carrots, beetsSow outdoors · Apr 9 – Apr 23
TomatoesStart indoors · Mar 5 – Mar 19
TomatoesTransplant · May 7 – May 21
Peppers, eggplantStart indoors · Feb 19 – Mar 5
Peppers, eggplantTransplant · May 14 – May 28
BeansSow outdoors · May 7 – May 21
Sweet cornSow outdoors · May 7 – May 21
Cucumbers, squashSow outdoors · May 7 – May 21
Fall lettuce, spinachSow outdoors · Aug 15 – Aug 29
GarlicPlant cloves · Sep 26 – Oct 31
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 30) and first fall frost (Oct 10) 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 25841 came on Mar 8 — 8 days earlier than the 1991–2020 average (Mar 16).

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 Flat Top, WV.

Soil in Flat Top, WV

The soil mapped at the center of ZIP 25841 is Dekalb — channery sandy loam, well drained.

TextureChannery sandy loamdrains and warms fast; dries out and needs more feeding
pH5.1strongly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter12.21%high
Hydrologic groupAwater soaks in fast
Farmland classNot prime farmlandUSDA classification

Map unit: Dekalb-Gilpin-Jefferson complex, 35 to 80 percent slopes, very stony.

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 25841; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Flat Top, WV

Summer high82 °Faverage high, July
Winter low22 °Faverage low, January
Hot days3days a year at 90 °F or more
Freezing nights125nights a year at 32 °F or less
Growing degree days2,943base 50 °F — the season’s usable heat
Longest day14 h 46 mindaylight on June 21
Shortest day9 h 34 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation41 inper year, rain and melted snow
Snowfall24 inper year; 22 days with snow on the ground

Average high and low, by month

10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 43 °F, low 22 °F 43°22° JanFebruary: average high 46 °F, low 24 °F 46°24° FebMarch: average high 53 °F, low 30 °F 53°30° MarApril: average high 66 °F, low 40 °F 66°40° AprMay: average high 73 °F, low 48 °F 73°48° MayJune: average high 78 °F, low 56 °F 78°56° JunJuly: average high 82 °F, low 60 °F 82°60° JulAugust: average high 81 °F, low 58 °F 81°58° AugSeptember: average high 75 °F, low 52 °F 75°52° SepOctober: average high 65 °F, low 40 °F 65°40° OctNovember: average high 57 °F, low 31 °F 57°31° NovDecember: average high 45 °F, low 27 °F 45°27° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 2.99 in precipitation, 7.5 in snowfall 3.0❄8 JanFebruary: 2.99 in precipitation, 5.7 in snowfall 3.0❄6 FebMarch: 3.72 in precipitation, 4.9 in snowfall 3.7❄5 MarApril: 3.65 in precipitation, 0.5 in snowfall 3.6❄1 AprMay: 4.73 in precipitation 4.7 MayJune: 3.83 in precipitation 3.8 JunJuly: 4.31 in precipitation 4.3 JulAugust: 3.30 in precipitation 3.3 AugSeptember: 3.11 in precipitation 3.1 SepOctober: 2.60 in precipitation, 0.1 in snowfall 2.6 OctNovember: 2.52 in precipitation, 0.7 in snowfall 2.5❄1 NovDecember: 3.22 in precipitation, 4.5 in snowfall 3.2❄5 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Athens, WV (10 mi away); precipitation: Princeton, WV (12 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

4 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

258436b
Ghent, WV · 5 mi
258207a
Camp Creek, WV · 5 mi
258256b
Cool Ridge, WV · 6 mi
259696b
Jumping Branch, WV · 6 mi
259227a
Spanishburg, WV · 6 mi
247127a
Athens, WV · 6 mi
259026b
Odd, WV · 7 mi
247147a
Beeson, WV · 8 mi

West Virginia planting zones →

Questions about 25841

What planting zone is ZIP code 25841?

ZIP code 25841 (Flat Top, 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 Flat Top, WV?

The median last spring frost (32 °F) near 25841 is April 30; after May 19 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Athens station.

When is the first frost in Flat Top, WV?

The median first fall frost near 25841 is October 10, giving a median frost-free growing season of 161 days.

When should I plant tomatoes in 25841?

Start tomato seeds indoors around Mar 5 – Mar 19 and set transplants outside around May 7 – May 21, one to three weeks after the median last frost.

How much rain and snow does 25841 get?

About 41 inches of precipitation a year and 24 inches of snowfall (NOAA 1991–2020 normals, Princeton station).

How hot do summers get in Flat Top, WV?

The average high peaks at 82 °F in July, with about 3 days a year at 90 °F or more.

What kind of soil does 25841 have?

The USDA soil survey maps Dekalb at the center of ZIP 25841: channery sandy loam, well drained, pH about 5.1 (strongly acidic).

Did spring come early in Flat Top, WV in 2026?

Spring leaf-out near 25841 came on Mar 8 in 2026, 8 days earlier than the 1991–2020 average (Mar 16), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Flat Top, WV?

Intermediate onions: the longest day near 25841 is 14 h 46 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 25841 change?

Yes. The 2012 USDA map put 25841 in zone 6a; the 2023 map puts it in zone 7a. The newer map uses 1991–2020 data and more weather stations.