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

Planting zone for 43142 — Milledgeville, OH

ZIP code 43142 (Milledgeville, Fayette County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 23 and the first fall frost October 21.

Where ZIP 43142 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 23
First frostOct 21
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 Milledgeville, 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 Milledgeville, OH

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 23median — 50% chance of a later frost
Safe for tender plantsMay 8only 10% chance of frost after
First fall frostOctober 21median — 10% chance by Oct 8
Growing season181 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 11 and returns around November 1.

From the NOAA station Washington Court House, OH — 9 miles away, elevation 958 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 43142

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 12 – Mar 26
SpinachSow outdoors · Mar 12 – Apr 2
Broccoli, cabbageStart indoors · Feb 12 – Feb 26
Broccoli, cabbageTransplant · Apr 2 – Apr 16
Onion setsPlant outdoors · Mar 26 – Apr 9
PotatoesPlant outdoors · Apr 2 – Apr 16
LettuceSow outdoors · Mar 26 – Apr 9
Carrots, beetsSow outdoors · Apr 2 – Apr 16
TomatoesStart indoors · Feb 26 – Mar 12
TomatoesTransplant · Apr 30 – May 14
Peppers, eggplantStart indoors · Feb 12 – Feb 26
Peppers, eggplantTransplant · May 7 – May 21
BeansSow outdoors · Apr 30 – May 14
Sweet cornSow outdoors · Apr 30 – May 14
Cucumbers, squashSow outdoors · Apr 30 – May 14
Fall lettuce, spinachSow outdoors · Aug 26 – Sep 9
GarlicPlant cloves · Oct 7 – Nov 11
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 23) and first fall frost (Oct 21) 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 43142 came on Mar 10 — 15 days earlier than the 1991–2020 average (Mar 25).

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).

Soil in Milledgeville, OH

The soil mapped at the center of ZIP 43142 is Brookston — silty clay loam, poorly drained.

TextureSilty clay loamholds water and nutrients; slow to drain and warm up
pH6.7neutral; most vegetables like 6.0–7.0
DrainagePoorly drainedconsider raised beds
Organic matter4%moderate
Hydrologic groupC/Dslow when drained; wet otherwise
Farmland classPrime farmland if drainedUSDA classification

Map unit: Brookston silty clay loam, fine texture, 0 to 2 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 43142; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Milledgeville, OH

Summer high84 °Faverage high, July
Winter low20 °Faverage low, January
Hot days12days a year at 90 °F or more
Freezing nights115nights a year at 32 °F or less
Growing degree days3,244base 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
Precipitation40.8 inper year, rain and melted snow
Snowfall18 inper year; 21 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 36 °F, low 20 °F 36°20° JanFebruary: average high 40 °F, low 22 °F 40°22° FebMarch: average high 50 °F, low 30 °F 50°30° MarApril: average high 64 °F, low 40 °F 64°40° AprMay: average high 73 °F, low 51 °F 73°51° MayJune: average high 81 °F, low 60 °F 81°60° JunJuly: average high 84 °F, low 63 °F 84°63° JulAugust: average high 82 °F, low 61 °F 82°61° AugSeptember: average high 77 °F, low 54 °F 77°54° SepOctober: average high 66 °F, low 42 °F 66°42° OctNovember: average high 52 °F, low 32 °F 52°32° NovDecember: average high 41 °F, low 25 °F 41°25° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 3.01 in precipitation, 7.9 in snowfall 3.0❄8 JanFebruary: 2.53 in precipitation, 3.7 in snowfall 2.5❄4 FebMarch: 3.76 in precipitation, 2.8 in snowfall 3.8❄3 MarApril: 4.06 in precipitation, 0.3 in snowfall 4.1 AprMay: 4.45 in precipitation 4.5 MayJune: 4.33 in precipitation 4.3 JunJuly: 3.95 in precipitation 4.0 JulAugust: 3.35 in precipitation 3.4 AugSeptember: 2.69 in precipitation 2.7 SepOctober: 2.69 in precipitation, 0.2 in snowfall 2.7 OctNovember: 2.78 in precipitation, 0.7 in snowfall 2.8❄1 NovDecember: 3.19 in precipitation, 2.7 in snowfall 3.2❄3 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Washington Court House, OH (9 mi away); precipitation: Washington Court House, OH (9 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.

431286a
Jeffersonville, OH · 5 mi
451696b
Sabina, OH · 7 mi
453076b
Bowersville, OH · 7 mi
453356b
Jamestown, OH · 9 mi
431606b
Washington Court House, OH · 9 mi
451666b
Reesville, OH · 10 mi
431066b
Bloomingburg, OH · 10 mi
431536a
South Solon, OH · 11 mi

Ohio planting zones →

Questions about 43142

What planting zone is ZIP code 43142?

ZIP code 43142 (Milledgeville, 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 Milledgeville, OH?

The median last spring frost (32 °F) near 43142 is April 23; after May 8 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Washington Court House station.

When is the first frost in Milledgeville, OH?

The median first fall frost near 43142 is October 21, giving a median frost-free growing season of 181 days.

When should I plant tomatoes in 43142?

Start tomato seeds indoors around Feb 26 – Mar 12 and set transplants outside around Apr 30 – May 14, one to three weeks after the median last frost.

How much rain and snow does 43142 get?

About 40.8 inches of precipitation a year and 18 inches of snowfall (NOAA 1991–2020 normals, Washington Court House station).

How hot do summers get in Milledgeville, OH?

The average high peaks at 84 °F in July, with about 12 days a year at 90 °F or more.

What kind of soil does 43142 have?

The USDA soil survey maps Brookston at the center of ZIP 43142: silty clay loam, poorly drained, pH about 6.7 (neutral).

Did spring come early in Milledgeville, OH in 2026?

Spring leaf-out near 43142 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 Milledgeville, OH?

Intermediate onions: the longest day near 43142 is 14 h 58 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 43142 change?

Yes. The 2012 USDA map put 43142 in zone 6a; the 2023 map puts it in zone 6b. The newer map uses 1991–2020 data and more weather stations.