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

Planting zone for 43802 — Adamsville, OH

ZIP code 43802 (Adamsville, Muskingum County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 27 and the first fall frost October 18.

Where ZIP 43802 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 27

First frostOct 18

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 Adamsville, 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 Adamsville, OH

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostApril 27median — 50% chance of a later frost

Safe for tender plantsMay 16only 10% chance of frost after

First fall frostOctober 18median — 10% chance by Oct 6

Growing season174 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 15 and returns around October 29.

From the NOAA station Coshocton Wpc Plt, OH — 11 miles away, elevation 761 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 43802

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Mar 16 – Mar 30

SpinachSow outdoors · Mar 16 – Apr 6

Broccoli, cabbageStart indoors · Feb 16 – Mar 2

Broccoli, cabbageTransplant · Apr 6 – Apr 20

Onion setsPlant outdoors · Mar 30 – Apr 13

PotatoesPlant outdoors · Apr 6 – Apr 20

LettuceSow outdoors · Mar 30 – Apr 13

Carrots, beetsSow outdoors · Apr 6 – Apr 20

TomatoesStart indoors · Mar 2 – Mar 16

TomatoesTransplant · May 4 – May 18

Peppers, eggplantStart indoors · Feb 16 – Mar 2

Peppers, eggplantTransplant · May 11 – May 25

BeansSow outdoors · May 4 – May 18

Sweet cornSow outdoors · May 4 – May 18

Cucumbers, squashSow outdoors · May 4 – May 18

Fall lettuce, spinachSow outdoors · Aug 23 – Sep 6

GarlicPlant cloves · Oct 4 – Nov 8

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 27) and first fall frost (Oct 18) 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 43802 came on Mar 10 — 15 days earlier than the 1991–2020 average (Mar 25).

average
Mar 252026
Mar 10

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.

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 Adamsville, OH.

Soil in Adamsville, OH

The soil mapped at the center of ZIP 43802 is Coshocton — 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 matter2%moderate

Hydrologic groupCwater soaks in slowly

Farmland classFarmland of local importanceUSDA classification

Map unit: Coshocton silt loam, 8 to 15 percent slopes, eroded.

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 43802; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Adamsville, OH

Summer high83 °Faverage high, July

Winter low20 °Faverage low, January

Hot days11days a year at 90 °F or more

Freezing nights123nights a year at 32 °F or less

Growing degree days3,102base 50 °F — the season’s usable heat

Longest day15 h 01 mindaylight on June 21

Shortest day9 h 19 mindaylight on December 21

Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)

Precipitation43 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: Coshocton Wpc Plt, OH (11 mi away); precipitation: Coshocton 5.5 Wsw, OH (10 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

437676b

Norwich, OH · 6 mi

437626b

New Concord, OH · 7 mi

438216a

Dresden, OH · 8 mi

438116b

Conesville, OH · 8 mi

438366b

Plainfield, OH · 11 mi

437016b

Zanesville, OH · 12 mi

438126b

Coshocton, OH · 12 mi

437026b

Zanesville, OH · 13 mi

Ohio planting zones →

Questions about 43802

What planting zone is ZIP code 43802?

ZIP code 43802 (Adamsville, 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 Adamsville, OH?

The median last spring frost (32 °F) near 43802 is April 27; after May 16 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Coshocton Wpc Plt station.

When is the first frost in Adamsville, OH?

The median first fall frost near 43802 is October 18, giving a median frost-free growing season of 174 days.

When should I plant tomatoes in 43802?

Start tomato seeds indoors around Mar 2 – Mar 16 and set transplants outside around May 4 – May 18, one to three weeks after the median last frost.

How much rain and snow does 43802 get?

About 43 inches of precipitation a year (NOAA 1991–2020 normals, Coshocton 5.5 Wsw station).

How hot do summers get in Adamsville, OH?

The average high peaks at 83 °F in July, with about 11 days a year at 90 °F or more.

What kind of soil does 43802 have?

The USDA soil survey maps Coshocton at the center of ZIP 43802: silt loam, moderately well drained, pH about 5.9 (moderately acidic).

Did spring come early in Adamsville, OH in 2026?

Spring leaf-out near 43802 came on Mar 10 in 2026, 15 days earlier than the 1991–2020 average (Mar 25), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Adamsville, OH?

Long-day onions: the longest day near 43802 is 15 h 01 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 43802 change?

Yes. The 2012 USDA map put 43802 in zone 6a; the 2023 map puts it in zone 6b. The newer map uses 1991–2020 data and more weather stations.