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

Planting zone for 26306 — Clarksburg, WV

ZIP code 26306 (Clarksburg, Harrison County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 22 and the first fall frost October 23.

Where ZIP 26306 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.

Zone6b−5 to 0 °F
Coldest night−20.6 to −17.8 °C
Last frostApr 22
First frostOct 23
2012 zone6a

Was 6a 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 6b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Clarksburg, 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 Clarksburg, WV

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 22median — 50% chance of a later frost
Safe for tender plantsMay 11only 10% chance of frost after
First fall frostOctober 23median — 10% chance by Oct 9
Growing season181 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 10 and returns around November 1.

From the NOAA station Clarksburg 1, WV — 2 miles away, elevation 991 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 26306

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 11 – Mar 25
SpinachSow outdoors · Mar 11 – Apr 1
Broccoli, cabbageStart indoors · Feb 11 – Feb 25
Broccoli, cabbageTransplant · Apr 1 – Apr 15
Onion setsPlant outdoors · Mar 25 – Apr 8
PotatoesPlant outdoors · Apr 1 – Apr 15
LettuceSow outdoors · Mar 25 – Apr 8
Carrots, beetsSow outdoors · Apr 1 – Apr 15
TomatoesStart indoors · Feb 25 – Mar 11
TomatoesTransplant · Apr 29 – May 13
Peppers, eggplantStart indoors · Feb 11 – Feb 25
Peppers, eggplantTransplant · May 6 – May 20
BeansSow outdoors · Apr 29 – May 13
Sweet cornSow outdoors · Apr 29 – May 13
Cucumbers, squashSow outdoors · Apr 29 – May 13
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 22) 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 26306 came on Mar 10 — 10 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 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.

Trees 68

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 102

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 178

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 134

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 11

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °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 °Fmuscadine30 ft · blooms late spring · medium shade tolerance · to −18 °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 Clarksburg, WV.

Soil in Clarksburg, WV

The center of ZIP 26306 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 26306; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Clarksburg, WV

Summer high85 °Faverage high, July
Winter low22 °Faverage low, January
Hot days16days a year at 90 °F or more
Freezing nights122nights a year at 32 °F or less
Growing degree days3,348base 50 °F — the season’s usable heat
Longest day14 h 56 mindaylight on June 21
Shortest day9 h 24 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation48.2 inper year, rain and melted snow
Snowfall24 inper year; 26 days with snow on the ground

Average high and low, by month

10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 40 °F, low 22 °F 40°22° JanFebruary: average high 43 °F, low 23 °F 43°23° FebMarch: average high 52 °F, low 30 °F 52°30° MarApril: average high 65 °F, low 39 °F 65°39° AprMay: average high 75 °F, low 50 °F 75°50° MayJune: average high 82 °F, low 59 °F 82°59° JunJuly: average high 85 °F, low 63 °F 85°63° JulAugust: average high 84 °F, low 62 °F 84°62° AugSeptember: average high 77 °F, low 55 °F 77°55° SepOctober: average high 66 °F, low 42 °F 66°42° OctNovember: average high 53 °F, low 32 °F 53°32° NovDecember: average high 44 °F, low 27 °F 44°27° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″6″January: 3.54 in precipitation, 7.9 in snowfall 3.5❄8 JanFebruary: 3.39 in precipitation, 7.8 in snowfall 3.4❄8 FebMarch: 4.17 in precipitation, 3.5 in snowfall 4.2❄4 MarApril: 4.08 in precipitation, 0.1 in snowfall 4.1 AprMay: 4.78 in precipitation 4.8 MayJune: 4.85 in precipitation 4.8 JunJuly: 5.33 in precipitation 5.3 JulAugust: 3.96 in precipitation 4.0 AugSeptember: 3.67 in precipitation 3.7 SepOctober: 3.34 in precipitation 3.3 OctNovember: 3.32 in precipitation, 0.7 in snowfall 3.3❄1 NovDecember: 3.81 in precipitation, 3.8 in snowfall 3.8❄4 Dec

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

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6b.

263016b
Clarksburg, WV · <1 mi
264226b
Reynoldsville, WV · 3 mi
263026b
Clarksburg, WV · 4 mi
263696b
Hepzibah, WV · 5 mi
263236b
Anmoore, WV · 5 mi
264386b
Spelter, WV · 5 mi
264046b
Meadowbrook, WV · 5 mi
264516b
West Milford, WV · 6 mi

All 3 ZIP codes in Clarksburg → · West Virginia planting zones →

Questions about 26306

What planting zone is ZIP code 26306?

ZIP code 26306 (Clarksburg, 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 Clarksburg, WV?

The median last spring frost (32 °F) near 26306 is April 22; after May 11 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Clarksburg 1 station.

When is the first frost in Clarksburg, WV?

The median first fall frost near 26306 is October 23, giving a median frost-free growing season of 181 days.

When should I plant tomatoes in 26306?

Start tomato seeds indoors around Feb 25 – Mar 11 and set transplants outside around Apr 29 – May 13, one to three weeks after the median last frost.

How much rain and snow does 26306 get?

About 48.2 inches of precipitation a year and 24 inches of snowfall (NOAA 1991–2020 normals, Clarksburg 1 station).

How hot do summers get in Clarksburg, WV?

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

Did spring come early in Clarksburg, WV in 2026?

Spring leaf-out near 26306 came on Mar 10 in 2026, 10 days earlier than the 1991–2020 average (Mar 20), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Clarksburg, WV?

Intermediate onions: the longest day near 26306 is 14 h 56 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 26306 change?

Yes. The 2012 USDA map put 26306 in zone 6a; the 2023 map puts it in zone 6b. The newer map uses 1991–2020 data and more weather stations.