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

Planting zone for 64035 — Hardin, MO

ZIP code 64035 (Hardin, Ray County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is April 8 and the first fall frost October 25.

Where ZIP 64035 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 8

First frostOct 25

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 Hardin, MO…

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 Hardin, MO

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostApril 8median — 50% chance of a later frost

Safe for tender plantsApril 26only 10% chance of frost after

First fall frostOctober 25median — 10% chance by Oct 10

Growing season197 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 30 and returns around November 3.

From the NOAA station Lexington 3e, MO — 8 miles away, elevation 827 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 64035

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 25 – Mar 11

SpinachSow outdoors · Feb 25 – Mar 18

Broccoli, cabbageStart indoors · Jan 28 – Feb 11

Broccoli, cabbageTransplant · Mar 18 – Apr 1

Onion setsPlant outdoors · Mar 11 – Mar 25

PotatoesPlant outdoors · Mar 18 – Apr 1

LettuceSow outdoors · Mar 11 – Mar 25

Carrots, beetsSow outdoors · Mar 18 – Apr 1

TomatoesStart indoors · Feb 11 – Feb 25

TomatoesTransplant · Apr 15 – Apr 29

Peppers, eggplantStart indoors · Jan 28 – Feb 11

Peppers, eggplantTransplant · Apr 22 – May 6

BeansSow outdoors · Apr 15 – Apr 29

Sweet cornSow outdoors · Apr 15 – Apr 29

Cucumbers, squashSow outdoors · Apr 15 – Apr 29

Fall lettuce, spinachSow outdoors · Aug 30 – Sep 13

GarlicPlant cloves · Oct 11 – Nov 15

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 8) and first fall frost (Oct 25) 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 64035 came on Mar 1 — 19 days earlier than the 1991–2020 average (Mar 20).

average
Mar 202026
Mar 1

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 Missouri

516 plants native to the lower 48 states, recorded in Missouri, and rated by the USDA to survive −10 °F or colder — the bottom of zone 6a. 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 Hardin, MO.

Soil in Hardin, MO

The soil mapped at the center of ZIP 64035 is Cotter — silt loam, well drained.

TextureSilt loama good balance for most vegetables

pH6.9neutral; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter3.5%moderate

Hydrologic groupCwater soaks in slowly

Farmland classprime farmlandUSDA classification

Map unit: Cotter silt loam, 0 to 2 percent slopes, rarely flooded.

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 64035; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Hardin, MO

Summer high88 °Faverage high, July

Winter low20 °Faverage low, January

Hot days37days a year at 90 °F or more

Freezing nights118nights a year at 32 °F or less

Growing degree days4,029base 50 °F — the season’s usable heat

Longest day14 h 56 mindaylight on June 21

Shortest day9 h 24 mindaylight on December 21

Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully

Precipitation43.3 inper year, rain and melted snow

Snowfall14 inper year; 17 days with snow on the ground

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Lexington 3e, MO (8 mi away); precipitation: Lexington 3e, MO (8 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.

Missouri planting zones →

Questions about 64035

What planting zone is ZIP code 64035?

ZIP code 64035 (Hardin, MO) 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 Hardin, MO?

The median last spring frost (32 °F) near 64035 is April 8; after April 26 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Lexington 3e station.

When is the first frost in Hardin, MO?

The median first fall frost near 64035 is October 25, giving a median frost-free growing season of 197 days.

When should I plant tomatoes in 64035?

Start tomato seeds indoors around Feb 11 – Feb 25 and set transplants outside around Apr 15 – Apr 29, one to three weeks after the median last frost.

How much rain and snow does 64035 get?

About 43.3 inches of precipitation a year and 14 inches of snowfall (NOAA 1991–2020 normals, Lexington 3e station).

How hot do summers get in Hardin, MO?

The average high peaks at 88 °F in July, with about 37 days a year at 90 °F or more.

What kind of soil does 64035 have?

The USDA soil survey maps Cotter at the center of ZIP 64035: silt loam, well drained, pH about 6.9 (neutral).

Did spring come early in Hardin, MO in 2026?

Spring leaf-out near 64035 came on Mar 1 in 2026, 19 days earlier than the 1991–2020 average (Mar 20), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Hardin, MO?

Intermediate onions: the longest day near 64035 is 14 h 56 min, so day-neutral types bulb best; long-day varieties may not bulb fully.