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

Planting zone for 43071 — Saint Louisville, OH

ZIP code 43071 (Saint Louisville, Licking County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is April 29 and the first fall frost October 16.

Where ZIP 43071 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 29
First frostOct 16
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 Saint Louisville, 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 Saint Louisville, OH

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 29median — 50% chance of a later frost
Safe for tender plantsMay 17only 10% chance of frost after
First fall frostOctober 16median — 10% chance by Oct 1
Growing season167 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 19 and returns around October 27.

From the NOAA station Newark Wtr Wks, OH — 7 miles away, elevation 837 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 43071

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 18 – Apr 1
SpinachSow outdoors · Mar 18 – Apr 8
Broccoli, cabbageStart indoors · Feb 18 – Mar 4
Broccoli, cabbageTransplant · Apr 8 – Apr 22
Onion setsPlant outdoors · Apr 1 – Apr 15
PotatoesPlant outdoors · Apr 8 – Apr 22
LettuceSow outdoors · Apr 1 – Apr 15
Carrots, beetsSow outdoors · Apr 8 – Apr 22
TomatoesStart indoors · Mar 4 – Mar 18
TomatoesTransplant · May 6 – May 20
Peppers, eggplantStart indoors · Feb 18 – Mar 4
Peppers, eggplantTransplant · May 13 – May 27
BeansSow outdoors · May 6 – May 20
Sweet cornSow outdoors · May 6 – May 20
Cucumbers, squashSow outdoors · May 6 – May 20
Fall lettuce, spinachSow outdoors · Aug 21 – Sep 4
GarlicPlant cloves · Oct 2 – Nov 6
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 29) and first fall frost (Oct 16) 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 43071 came on Mar 12 — 18 days earlier than the 1991–2020 average (Mar 30).

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 Saint Louisville, OH.

Soil in Saint Louisville, OH

The soil mapped at the center of ZIP 43071 is Brownsville — channery silt loam, well drained.

TextureChannery silt loama good balance for most vegetables
pH4.7strongly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter2%moderate
Hydrologic groupAwater soaks in fast
Farmland classFarmland of local importanceUSDA classification

Map unit: Brownsville channery silt loam, 12 to 18 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 43071; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Saint Louisville, OH

Summer high84 °Faverage high, July
Winter low18 °Faverage low, January
Hot days13days a year at 90 °F or more
Freezing nights129nights a year at 32 °F or less
Growing degree days2,991base 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)
Precipitation43.4 inper year, rain and melted snow
Snowfall15 inper year; 24 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 18 °F 36°18° JanFebruary: average high 40 °F, low 20 °F 40°20° FebMarch: average high 50 °F, low 27 °F 50°27° MarApril: average high 63 °F, low 37 °F 63°37° AprMay: average high 73 °F, low 48 °F 73°48° MayJune: average high 81 °F, low 57 °F 81°57° JunJuly: average high 84 °F, low 61 °F 84°61° JulAugust: average high 83 °F, low 59 °F 83°59° AugSeptember: average high 76 °F, low 52 °F 76°52° SepOctober: average high 64 °F, low 40 °F 64°40° OctNovember: average high 52 °F, low 31 °F 52°31° NovDecember: average high 41 °F, low 24 °F 41°24° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 3.21 in precipitation, 7.2 in snowfall 3.2❄7 JanFebruary: 2.56 in precipitation, 3.9 in snowfall 2.6❄4 FebMarch: 3.61 in precipitation, 2.2 in snowfall 3.6❄2 MarApril: 4.01 in precipitation, 0.1 in snowfall 4.0 AprMay: 4.24 in precipitation 4.2 MayJune: 4.69 in precipitation 4.7 JunJuly: 4.56 in precipitation 4.6 JulAugust: 3.89 in precipitation 3.9 AugSeptember: 3.24 in precipitation 3.2 SepOctober: 3.11 in precipitation 3.1 OctNovember: 2.99 in precipitation, 0.2 in snowfall 3.0 NovDecember: 3.29 in precipitation, 1.6 in snowfall 3.3❄2 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Newark Wtr Wks, OH (7 mi away); precipitation: Newark Wtr Wks, OH (7 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6a.

430556a
Newark, OH · 5 mi
430806a
Utica, OH · 6 mi
430376a
Martinsburg, OH · 7 mi
430056a
Bladensburg, OH · 8 mi
430586a
Newark, OH · 9 mi
430936a
Newark, OH · 9 mi
430276a
Homer, OH · 10 mi
438226a
Frazeysburg, OH · 11 mi

Ohio planting zones →

Questions about 43071

What planting zone is ZIP code 43071?

ZIP code 43071 (Saint Louisville, 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 Saint Louisville, OH?

The median last spring frost (32 °F) near 43071 is April 29; after May 17 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Newark Wtr Wks station.

When is the first frost in Saint Louisville, OH?

The median first fall frost near 43071 is October 16, giving a median frost-free growing season of 167 days.

When should I plant tomatoes in 43071?

Start tomato seeds indoors around Mar 4 – Mar 18 and set transplants outside around May 6 – May 20, one to three weeks after the median last frost.

How much rain and snow does 43071 get?

About 43.4 inches of precipitation a year and 15 inches of snowfall (NOAA 1991–2020 normals, Newark Wtr Wks station).

How hot do summers get in Saint Louisville, OH?

The average high peaks at 84 °F in July, with about 13 days a year at 90 °F or more.

What kind of soil does 43071 have?

The USDA soil survey maps Brownsville at the center of ZIP 43071: channery silt loam, well drained, pH about 4.7 (strongly acidic).

Did spring come early in Saint Louisville, OH in 2026?

Spring leaf-out near 43071 came on Mar 12 in 2026, 18 days earlier than the 1991–2020 average (Mar 30), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Saint Louisville, OH?

Long-day onions: the longest day near 43071 is 15 h 02 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).