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

Planting zone for 64651 — Laclede, MO

ZIP code 64651 (Laclede, Linn County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is April 16 and the first fall frost October 20.

Where ZIP 64651 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 16
First frostOct 20
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 Laclede, 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 Laclede, 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 1only 10% chance of frost after
First fall frostOctober 20median — 10% chance by Oct 7
Growing season187 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 4 and returns around October 30.

From the NOAA station Linneus 3se, MO — 6 miles away, elevation 814 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 64651

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 25 – Sep 8
GarlicPlant cloves · Oct 6 – Nov 10
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 16) and first fall frost (Oct 20) 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 64651 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 Laclede, MO

The soil mapped at the center of ZIP 64651 is Lagonda — silt loam, somewhat poorly drained.

TextureSilt loama good balance for most vegetables
pH6.2slightly acidic; most vegetables like 6.0–7.0
DrainageSomewhat poorly drainedconsider raised beds
Organic matter4.3%moderate
Hydrologic groupC/Dslow when drained; wet otherwise
Farmland classPrime farmland if drainedUSDA classification

Map unit: Lagonda silt 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 64651; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Laclede, MO

Summer high86 °Faverage high, July
Winter low16 °Faverage low, January
Hot days24days a year at 90 °F or more
Freezing nights124nights a year at 32 °F or less
Growing degree days3,533base 50 °F — the season’s usable heat
Longest day14 h 59 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
Precipitation39 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 34 °F, low 16 °F 34°16° JanFebruary: average high 39 °F, low 21 °F 39°21° FebMarch: average high 51 °F, low 31 °F 51°31° MarApril: average high 63 °F, low 42 °F 63°42° AprMay: average high 72 °F, low 53 °F 72°53° MayJune: average high 81 °F, low 63 °F 81°63° JunJuly: average high 86 °F, low 66 °F 86°66° JulAugust: average high 84 °F, low 64 °F 84°64° AugSeptember: average high 77 °F, low 55 °F 77°55° SepOctober: average high 65 °F, low 43 °F 65°43° OctNovember: average high 51 °F, low 32 °F 51°32° NovDecember: average high 39 °F, low 22 °F 39°22° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 1.38 in precipitation 1.4 JanFebruary: 1.75 in precipitation 1.8 FebMarch: 2.44 in precipitation 2.4 MarApril: 3.34 in precipitation 3.3 AprMay: 5.13 in precipitation 5.1 MayJune: 5.61 in precipitation 5.6 JunJuly: 4.94 in precipitation 4.9 JulAugust: 3.26 in precipitation 3.3 AugSeptember: 4.16 in precipitation 4.2 SepOctober: 3.33 in precipitation 3.3 OctNovember: 2.28 in precipitation 2.3 NovDecember: 1.35 in precipitation 1.4 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Linneus 3se, MO (6 mi away); precipitation: Brookfield 1.2 Wsw, MO (4 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6a.

646596a
Meadville, MO · 6 mi
646286a
Brookfield, MO · 7 mi
646536a
Linneus, MO · 8 mi
646816a
Sumner, MO · 9 mi
646886a
Wheeling, MO · 10 mi
646766a
Rothville, MO · 12 mi
646746a
Purdin, MO · 13 mi
646606a
Mendon, MO · 15 mi

Missouri planting zones →

Questions about 64651

What planting zone is ZIP code 64651?

ZIP code 64651 (Laclede, 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 Laclede, MO?

The median last spring frost (32 °F) near 64651 is April 16; after May 1 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Linneus 3se station.

When is the first frost in Laclede, MO?

The median first fall frost near 64651 is October 20, giving a median frost-free growing season of 187 days.

When should I plant tomatoes in 64651?

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 64651 get?

About 39 inches of precipitation a year (NOAA 1991–2020 normals, Brookfield 1.2 Wsw station).

How hot do summers get in Laclede, MO?

The average high peaks at 86 °F in July, with about 24 days a year at 90 °F or more.

What kind of soil does 64651 have?

The USDA soil survey maps Lagonda at the center of ZIP 64651: silt loam, somewhat poorly drained, pH about 6.2 (slightly acidic).

Did spring come early in Laclede, MO in 2026?

Spring leaf-out near 64651 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 Laclede, MO?

Intermediate onions: the longest day near 64651 is 14 h 59 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 64651 change?

Yes. The 2012 USDA map put 64651 in zone 5b; the 2023 map puts it in zone 6a. The newer map uses 1991–2020 data and more weather stations.