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

Planting zone for 43939 — Mount Pleasant, OH

ZIP code 43939 (Mount Pleasant, Jefferson County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 18 and the first fall frost November 1.

Where ZIP 43939 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 18
First frostNov 1
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 Mount Pleasant, OH…

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 Pleasant, OH

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 18median — 50% chance of a later frost
Safe for tender plantsMay 6only 10% chance of frost after
First fall frostNovember 1median — 10% chance by Oct 18
Growing season196 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 5 and returns around November 10.

From the NOAA station Pike Island(Lock & Dam), WV — 6 miles away, elevation 640 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 43939

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 7 – Mar 21
SpinachSow outdoors · Mar 7 – Mar 28
Broccoli, cabbageStart indoors · Feb 7 – Feb 21
Broccoli, cabbageTransplant · Mar 28 – Apr 11
Onion setsPlant outdoors · Mar 21 – Apr 4
PotatoesPlant outdoors · Mar 28 – Apr 11
LettuceSow outdoors · Mar 21 – Apr 4
Carrots, beetsSow outdoors · Mar 28 – Apr 11
TomatoesStart indoors · Feb 21 – Mar 7
TomatoesTransplant · Apr 25 – May 9
Peppers, eggplantStart indoors · Feb 7 – Feb 21
Peppers, eggplantTransplant · May 2 – May 16
BeansSow outdoors · Apr 25 – May 9
Sweet cornSow outdoors · Apr 25 – May 9
Cucumbers, squashSow outdoors · Apr 25 – May 9
Fall lettuce, spinachSow outdoors · Sep 6 – Sep 20
GarlicPlant cloves · Oct 18 – Nov 22
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 18) and first fall frost (Nov 1) 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 43939 came on Mar 10 — 18 days earlier than the 1991–2020 average (Mar 28).

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 Ohio

570 plants native to the lower 48 states, recorded in Ohio, and rated by the USDA to survive −5 °F or colder — the bottom of zone 6b. Each links to its USDA PLANTS profile.

Trees 71

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 109

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 203

American bur-reed3 ft · blooms indeterminate · medium shade tolerance · to −33 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °FAmerican lotus3 ft · blooms mid summer · high shade tolerance · to −36 °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 °F

Grasses 165

American beachgrass2.5 ft · blooms spring · high shade tolerance · to −28 °Farctic brome3 ft · blooms early summer · low shade tolerance · to −33 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °Fbeaked spikerush3 ft · blooms late spring · high shade tolerance · to −28 °FBebb's sedge3 ft · blooms late spring · low shade tolerance · to −38 °FBicknell's sedge3 ft · blooms late spring · low shade tolerance · to −38 °F

Vines 10

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 °Friverbank grape45 ft · blooms late spring · medium shade tolerance · to −33 °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 Mount Pleasant, OH.

Soil in Mount Pleasant, OH

The soil mapped at the center of ZIP 43939 is Gilpin — silt loam, well drained.

TextureSilt loama good balance for most vegetables
pH5.1strongly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter2.25%moderate
Hydrologic groupCwater soaks in slowly
Farmland classFarmland of local importanceUSDA classification

Map unit: Gilpin-Coshocton silt loams, 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 43939; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Mount Pleasant, OH

Summer high83 °Faverage high, July
Winter low22 °Faverage low, January
Hot days9days a year at 90 °F or more
Freezing nights107nights a year at 32 °F or less
Growing degree days3,274base 50 °F — the season’s usable heat
Longest day15 h 02 mindaylight on June 21
Shortest day9 h 18 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation40.9 inper year, rain and melted snow
Snowfall15 inper year; 17 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 37 °F, low 22 °F 37°22° JanFebruary: average high 40 °F, low 23 °F 40°23° FebMarch: average high 49 °F, low 30 °F 49°30° MarApril: average high 62 °F, low 40 °F 62°40° AprMay: average high 72 °F, low 50 °F 72°50° MayJune: average high 80 °F, low 60 °F 80°60° JunJuly: average high 83 °F, low 64 °F 83°64° JulAugust: average high 82 °F, low 63 °F 82°63° AugSeptember: average high 76 °F, low 57 °F 76°57° SepOctober: average high 65 °F, low 45 °F 65°45° OctNovember: average high 52 °F, low 35 °F 52°35° NovDecember: average high 42 °F, low 28 °F 42°28° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 3.16 in precipitation, 5.3 in snowfall 3.2❄5 JanFebruary: 2.45 in precipitation, 4.4 in snowfall 2.5❄4 FebMarch: 3.39 in precipitation, 2.6 in snowfall 3.4❄3 MarApril: 3.45 in precipitation, 0.1 in snowfall 3.5 AprMay: 3.99 in precipitation 4.0 MayJune: 4.47 in precipitation 4.5 JunJuly: 3.67 in precipitation 3.7 JulAugust: 3.87 in precipitation 3.9 AugSeptember: 3.65 in precipitation 3.6 SepOctober: 2.79 in precipitation 2.8 OctNovember: 2.86 in precipitation, 0.2 in snowfall 2.9 NovDecember: 3.17 in precipitation, 2.6 in snowfall 3.2❄3 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Pike Island(Lock & Dam), WV (6 mi away); precipitation: Pike Island(Lock & Dam), WV (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

439167a
Colerain, OH · 3 mi
439176b
Dillonvale, OH · 3 mi
439056b
Barton, OH · 4 mi
439356b
Martins Ferry, OH · 5 mi
439436b
Rayland, OH · 5 mi
439716b
Yorkville, OH · 5 mi
439746b
Harrisville, OH · 5 mi
439377a
Maynard, OH · 5 mi

Ohio planting zones →

Questions about 43939

What planting zone is ZIP code 43939?

ZIP code 43939 (Mount Pleasant, OH) 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 Pleasant, OH?

The median last spring frost (32 °F) near 43939 is April 18; after May 6 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Pike Island(Lock & Dam) station.

When is the first frost in Mount Pleasant, OH?

The median first fall frost near 43939 is November 1, giving a median frost-free growing season of 196 days.

When should I plant tomatoes in 43939?

Start tomato seeds indoors around Feb 21 – Mar 7 and set transplants outside around Apr 25 – May 9, one to three weeks after the median last frost.

How much rain and snow does 43939 get?

About 40.9 inches of precipitation a year and 15 inches of snowfall (NOAA 1991–2020 normals, Pike Island(Lock & Dam) station).

How hot do summers get in Mount Pleasant, OH?

The average high peaks at 83 °F in July, with about 9 days a year at 90 °F or more.

What kind of soil does 43939 have?

The USDA soil survey maps Gilpin at the center of ZIP 43939: silt loam, well drained, pH about 5.1 (strongly acidic).

Did spring come early in Mount Pleasant, OH in 2026?

Spring leaf-out near 43939 came on Mar 10 in 2026, 18 days earlier than the 1991–2020 average (Mar 28), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Mount Pleasant, OH?

Long-day onions: the longest day near 43939 is 15 h 02 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 43939 change?

Yes. The 2012 USDA map put 43939 in zone 6a; the 2023 map puts it in zone 6b. The newer map uses 1991–2020 data and more weather stations.