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

Planting zone for 64763 — Lowry City, MO

ZIP code 64763 (Lowry City, St. Clair County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 16 and the first fall frost October 24.

Where ZIP 64763 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 16
First frostOct 24
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 Lowry City, 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 Lowry City, MO

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 16median — 50% chance of a later frost
Safe for tender plantsMay 3only 10% chance of frost after
First fall frostOctober 24median — 10% chance by Oct 10
Growing season189 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 4 and returns around November 1.

From the NOAA station Osceola, MO — 7 miles away, elevation 745 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 64763

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 5 – Mar 19
SpinachSow outdoors · Mar 5 – Mar 26
Broccoli, cabbageStart indoors · Feb 5 – Feb 19
Broccoli, cabbageTransplant · Mar 26 – Apr 9
Onion setsPlant outdoors · Mar 19 – Apr 2
PotatoesPlant outdoors · Mar 26 – Apr 9
LettuceSow outdoors · Mar 19 – Apr 2
Carrots, beetsSow outdoors · Mar 26 – Apr 9
TomatoesStart indoors · Feb 19 – Mar 5
TomatoesTransplant · Apr 23 – May 7
Peppers, eggplantStart indoors · Feb 5 – Feb 19
Peppers, eggplantTransplant · Apr 30 – May 14
BeansSow outdoors · Apr 23 – May 7
Sweet cornSow outdoors · Apr 23 – May 7
Cucumbers, squashSow outdoors · Apr 23 – May 7
Fall lettuce, spinachSow outdoors · Aug 29 – Sep 12
GarlicPlant cloves · Oct 10 – Nov 14
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 16) and first fall frost (Oct 24) 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 64763 came on Feb 24 — 16 days earlier than the 1991–2020 average (Mar 12).

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 Lowry City, MO

The soil mapped at the center of ZIP 64763 is Barden — silt loam, moderately well drained.

TextureSilt loama good balance for most vegetables
pH5.3strongly acidic; most vegetables like 6.0–7.0
DrainageModerately well drainednatural drainage class
Organic matter2.5%moderate
Hydrologic groupDwater soaks in very slowly
Farmland classprime farmlandUSDA classification

Map unit: Barden silt loam, 1 to 5 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 64763; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Lowry City, MO

Summer high90 °Faverage high, July
Winter low21 °Faverage low, January
Hot days48days a year at 90 °F or more
Freezing nights97nights a year at 32 °F or less
Growing degree days4,274base 50 °F — the season’s usable heat
Longest day14 h 49 mindaylight on June 21
Shortest day9 h 31 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation45.1 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 42 °F, low 21 °F 42°21° JanFebruary: average high 47 °F, low 25 °F 47°25° FebMarch: average high 58 °F, low 35 °F 58°35° MarApril: average high 68 °F, low 44 °F 68°44° AprMay: average high 77 °F, low 55 °F 77°55° MayJune: average high 86 °F, low 64 °F 86°64° JunJuly: average high 90 °F, low 68 °F 90°68° JulAugust: average high 89 °F, low 66 °F 89°66° AugSeptember: average high 81 °F, low 58 °F 81°58° SepOctober: average high 70 °F, low 46 °F 70°46° OctNovember: average high 57 °F, low 34 °F 57°34° NovDecember: average high 46 °F, low 25 °F 46°25° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 1.77 in precipitation 1.8 JanFebruary: 2.20 in precipitation 2.2 FebMarch: 3.22 in precipitation 3.2 MarApril: 4.89 in precipitation 4.9 AprMay: 5.85 in precipitation 5.8 MayJune: 4.85 in precipitation 4.8 JunJuly: 4.77 in precipitation 4.8 JulAugust: 3.85 in precipitation 3.9 AugSeptember: 4.20 in precipitation 4.2 SepOctober: 3.42 in precipitation 3.4 OctNovember: 3.85 in precipitation 3.9 NovDecember: 2.24 in precipitation 2.2 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Osceola, MO (7 mi away); precipitation: Lowry City 3.8 Ese, MO (3 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6b.

647406b
Deepwater, MO · 6 mi
647766b
Osceola, MO · 7 mi
647816b
Roscoe, MO · 13 mi
657356b
Quincy, MO · 14 mi
647356b
Clinton, MO · 16 mi
647386b
Collins, MO · 17 mi
647706b
Montrose, MO · 18 mi
657746b
Weaubleau, MO · 19 mi

Missouri planting zones →

Questions about 64763

What planting zone is ZIP code 64763?

ZIP code 64763 (Lowry City, MO) 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 Lowry City, MO?

The median last spring frost (32 °F) near 64763 is April 16; after May 3 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Osceola station.

When is the first frost in Lowry City, MO?

The median first fall frost near 64763 is October 24, giving a median frost-free growing season of 189 days.

When should I plant tomatoes in 64763?

Start tomato seeds indoors around Feb 19 – Mar 5 and set transplants outside around Apr 23 – May 7, one to three weeks after the median last frost.

How much rain and snow does 64763 get?

About 45.1 inches of precipitation a year (NOAA 1991–2020 normals, Lowry City 3.8 Ese station).

How hot do summers get in Lowry City, MO?

The average high peaks at 90 °F in July, with about 48 days a year at 90 °F or more.

What kind of soil does 64763 have?

The USDA soil survey maps Barden at the center of ZIP 64763: silt loam, moderately well drained, pH about 5.3 (strongly acidic).

Did spring come early in Lowry City, MO in 2026?

Spring leaf-out near 64763 came on Feb 24 in 2026, 16 days earlier than the 1991–2020 average (Mar 12), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Lowry City, MO?

Intermediate onions: the longest day near 64763 is 14 h 49 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 64763 change?

Yes. The 2012 USDA map put 64763 in zone 6a; the 2023 map puts it in zone 6b. The newer map uses 1991–2020 data and more weather stations.