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

Planting zone for 64688 — Wheeling, MO

ZIP code 64688 (Wheeling, Livingston County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is April 15 and the first fall frost October 21.

Where ZIP 64688 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 15
First frostOct 21
2012 zone5b

Was 5b 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 6a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Wheeling, 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 Wheeling, MO

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 15median — 50% chance of a later frost
Safe for tender plantsApril 30only 10% chance of frost after
First fall frostOctober 21median — 10% chance by Oct 7
Growing season187 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 5 and returns around November 1.

From the NOAA station Chillicothe 2s, MO — 9 miles away, elevation 781 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 64688

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 4 – Mar 18
SpinachSow outdoors · Mar 4 – Mar 25
Broccoli, cabbageStart indoors · Feb 4 – Feb 18
Broccoli, cabbageTransplant · Mar 25 – Apr 8
Onion setsPlant outdoors · Mar 18 – Apr 1
PotatoesPlant outdoors · Mar 25 – Apr 8
LettuceSow outdoors · Mar 18 – Apr 1
Carrots, beetsSow outdoors · Mar 25 – Apr 8
TomatoesStart indoors · Feb 18 – Mar 4
TomatoesTransplant · Apr 22 – May 6
Peppers, eggplantStart indoors · Feb 4 – Feb 18
Peppers, eggplantTransplant · Apr 29 – May 13
BeansSow outdoors · Apr 22 – May 6
Sweet cornSow outdoors · Apr 22 – May 6
Cucumbers, squashSow outdoors · Apr 22 – May 6
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 15) 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 64688 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).

Soil in Wheeling, MO

The soil mapped at the center of ZIP 64688 is Lagonda — silty clay loam, somewhat poorly drained.

TextureSilty clay loamholds water and nutrients; slow to drain and warm up
pH7.0neutral; most vegetables like 6.0–7.0
DrainageSomewhat poorly drainedconsider raised beds
Organic matter3.5%moderate
Hydrologic groupC/Dslow when drained; wet otherwise
Farmland classPrime farmland if drainedUSDA classification

Map unit: Lagonda silty clay loam, 2 to 5 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 64688; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Wheeling, MO

Summer high87 °Faverage high, July
Winter low16 °Faverage low, January
Hot days36days a year at 90 °F or more
Freezing nights123nights a year at 32 °F or less
Growing degree days3,699base 50 °F — the season’s usable heat
Longest day15 h 00 mindaylight on June 21
Shortest day9 h 21 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation40.6 inper year, rain and melted snow

Average high and low, by month

10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 35 °F, low 16 °F 35°16° JanFebruary: average high 40 °F, low 21 °F 40°21° FebMarch: average high 52 °F, low 31 °F 52°31° MarApril: average high 64 °F, low 41 °F 64°41° AprMay: average high 74 °F, low 53 °F 74°53° MayJune: average high 83 °F, low 63 °F 83°63° JunJuly: average high 87 °F, low 67 °F 87°67° JulAugust: average high 86 °F, low 64 °F 86°64° AugSeptember: average high 78 °F, low 55 °F 78°55° SepOctober: average high 66 °F, low 43 °F 66°43° OctNovember: average high 51 °F, low 31 °F 51°31° NovDecember: average high 39 °F, low 22 °F 39°22° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 1.28 in precipitation 1.3 JanFebruary: 1.77 in precipitation 1.8 FebMarch: 2.88 in precipitation 2.9 MarApril: 3.81 in precipitation 3.8 AprMay: 5.45 in precipitation 5.5 MayJune: 5.11 in precipitation 5.1 JunJuly: 4.64 in precipitation 4.6 JulAugust: 4.22 in precipitation 4.2 AugSeptember: 4.30 in precipitation 4.3 SepOctober: 3.12 in precipitation 3.1 OctNovember: 2.42 in precipitation 2.4 NovDecember: 1.57 in precipitation 1.6 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Chillicothe 2s, MO (9 mi away); precipitation: Chillicothe 2.9 E, MO (7 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6a.

646596a
Meadville, MO · 5 mi
646516a
Laclede, MO · 10 mi
646356a
Chula, MO · 10 mi
646536a
Linneus, MO · 11 mi
646016a
Chillicothe, MO · 11 mi
646436a
Hale, MO · 14 mi
646816a
Sumner, MO · 14 mi
646866a
Utica, MO · 14 mi

Missouri planting zones →

Questions about 64688

What planting zone is ZIP code 64688?

ZIP code 64688 (Wheeling, 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 Wheeling, MO?

The median last spring frost (32 °F) near 64688 is April 15; after April 30 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Chillicothe 2s station.

When is the first frost in Wheeling, MO?

The median first fall frost near 64688 is October 21, giving a median frost-free growing season of 187 days.

When should I plant tomatoes in 64688?

Start tomato seeds indoors around Feb 18 – Mar 4 and set transplants outside around Apr 22 – May 6, one to three weeks after the median last frost.

How much rain and snow does 64688 get?

About 40.6 inches of precipitation a year (NOAA 1991–2020 normals, Chillicothe 2.9 E station).

How hot do summers get in Wheeling, MO?

The average high peaks at 87 °F in July, with about 36 days a year at 90 °F or more.

What kind of soil does 64688 have?

The USDA soil survey maps Lagonda at the center of ZIP 64688: silty clay loam, somewhat poorly drained, pH about 7.0 (neutral).

Did spring come early in Wheeling, MO in 2026?

Spring leaf-out near 64688 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 Wheeling, MO?

Intermediate onions: the longest day near 64688 is 15 h 00 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 64688 change?

Yes. The 2012 USDA map put 64688 in zone 5b; the 2023 map puts it in zone 6a. The newer map uses 1991–2020 data and more weather stations.