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

Planting zone for 43111 — Carbon Hill, OH

ZIP code 43111 (Carbon Hill, Hocking County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is April 30 and the first fall frost October 14.

Where ZIP 43111 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.

Zone6a−10 to −5 °F
Coldest night−23.3 to −20.6 °C
Last frostApr 30
First frostOct 14
2012 zone6a

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 6a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Carbon Hill, 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 Carbon Hill, OH

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 17only 10% chance of frost after
First fall frostOctober 14median — 10% chance by Oct 2
Growing season167 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 19 and returns around October 24.

From the NOAA station Logan, OH — 8 miles away, elevation 722 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 43111

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 19 – Sep 2
GarlicPlant cloves · Sep 30 – Nov 4
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 30) and first fall frost (Oct 14) 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 43111 came on Mar 10 — 14 days earlier than the 1991–2020 average (Mar 24).

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 6a in Ohio

565 plants native to the lower 48 states, recorded in Ohio, and rated by the USDA to survive −10 °F or colder — the bottom of zone 6a. Each links to its USDA PLANTS profile.

Trees 70

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 202

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 164

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 8

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 °Friverbank grape45 ft · blooms late spring · medium shade tolerance · to −33 °Fsummer grape30 ft · blooms late spring · low shade tolerance · to −23 °Ftrumpet creeper2 ft · blooms summer · high shade tolerance · to −13 °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 Carbon Hill, OH.

Soil in Carbon Hill, OH

The soil mapped at the center of ZIP 43111 is Otwell — silt loam, moderately well drained.

TextureSilt loama good balance for most vegetables
pH5.9moderately acidic; most vegetables like 6.0–7.0
DrainageModerately well drainednatural drainage class
Organic matter1.25%low — add compost
Hydrologic groupDwater soaks in very slowly
Farmland classFarmland of local importanceUSDA classification

Map unit: Otwell silt loam, 6 to 12 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 43111; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Carbon Hill, OH

Summer high85 °Faverage high, July
Winter low19 °Faverage low, January
Hot days13days a year at 90 °F or more
Freezing nights135nights a year at 32 °F or less
Growing degree days3,121base 50 °F — the season’s usable heat
Longest day14 h 58 mindaylight on June 21
Shortest day9 h 22 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation40.2 inper year, rain and melted snow
Snowfall12 inper year; 16 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 39 °F, low 19 °F 39°19° JanFebruary: average high 42 °F, low 21 °F 42°21° FebMarch: average high 52 °F, low 28 °F 52°28° MarApril: average high 65 °F, low 37 °F 65°37° AprMay: average high 74 °F, low 48 °F 74°48° MayJune: average high 81 °F, low 57 °F 81°57° JunJuly: average high 85 °F, low 61 °F 85°61° JulAugust: average high 84 °F, low 59 °F 84°59° AugSeptember: average high 78 °F, low 52 °F 78°52° SepOctober: average high 67 °F, low 40 °F 67°40° OctNovember: average high 54 °F, low 30 °F 54°30° NovDecember: average high 43 °F, low 23 °F 43°23° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 3.09 in precipitation, 4.3 in snowfall 3.1❄4 JanFebruary: 2.74 in precipitation, 3.9 in snowfall 2.7❄4 FebMarch: 3.42 in precipitation, 2 in snowfall 3.4❄2 MarApril: 3.68 in precipitation 3.7 AprMay: 3.86 in precipitation 3.9 MayJune: 4.00 in precipitation 4.0 JunJuly: 4.54 in precipitation 4.5 JulAugust: 3.45 in precipitation 3.5 AugSeptember: 2.81 in precipitation 2.8 SepOctober: 2.89 in precipitation 2.9 OctNovember: 2.83 in precipitation, 0.1 in snowfall 2.8 NovDecember: 2.87 in precipitation, 1.2 in snowfall 2.9❄1 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Logan, OH (8 mi away); precipitation: Nelsonville, OH (within 1 mile). 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.

431446b
Murray City, OH · 3 mi
457166a
Buchtel, OH · 4 mi
457646b
Nelsonville, OH · 4 mi
431276a
Haydenville, OH · 4 mi
437666a
New Straitsville, OH · 6 mi
431586b
Union Furnace, OH · 7 mi
437826a
Shawnee, OH · 8 mi
457826b
Trimble, OH · 9 mi

Ohio planting zones →

Questions about 43111

What planting zone is ZIP code 43111?

ZIP code 43111 (Carbon Hill, OH) is in USDA hardiness zone 6a on the 2023 map: the coldest night of an average winter reaches −10 to −5 °F (−23.3 to −20.6 °C).

When is the last frost in Carbon Hill, OH?

The median last spring frost (32 °F) near 43111 is April 30; after May 17 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Logan station.

When is the first frost in Carbon Hill, OH?

The median first fall frost near 43111 is October 14, giving a median frost-free growing season of 167 days.

When should I plant tomatoes in 43111?

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 43111 get?

About 40.2 inches of precipitation a year and 12 inches of snowfall (NOAA 1991–2020 normals, Nelsonville station).

How hot do summers get in Carbon Hill, OH?

The average high peaks at 85 °F in July, with about 13 days a year at 90 °F or more.

What kind of soil does 43111 have?

The USDA soil survey maps Otwell at the center of ZIP 43111: silt loam, moderately well drained, pH about 5.9 (moderately acidic).

Did spring come early in Carbon Hill, OH in 2026?

Spring leaf-out near 43111 came on Mar 10 in 2026, 14 days earlier than the 1991–2020 average (Mar 24), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Carbon Hill, OH?

Intermediate onions: the longest day near 43111 is 14 h 58 min, so day-neutral types bulb best; long-day varieties may not bulb fully.