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

Planting zone for 64443 — Easton, MO

ZIP code 64443 (Easton, Buchanan County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is April 17 and the first fall frost October 19.

Where ZIP 64443 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 17
First frostOct 19
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 Easton, 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 Easton, MO

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 17median — 50% chance of a later frost
Safe for tender plantsMay 1only 10% chance of frost after
First fall frostOctober 19median — 10% chance by Oct 4
Growing season184 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 7 and returns around October 28.

From the NOAA station Cosby 2w, MO — 8 miles away, elevation 909 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 64443

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 6 – Mar 20
SpinachSow outdoors · Mar 6 – Mar 27
Broccoli, cabbageStart indoors · Feb 6 – Feb 20
Broccoli, cabbageTransplant · Mar 27 – Apr 10
Onion setsPlant outdoors · Mar 20 – Apr 3
PotatoesPlant outdoors · Mar 27 – Apr 10
LettuceSow outdoors · Mar 20 – Apr 3
Carrots, beetsSow outdoors · Mar 27 – Apr 10
TomatoesStart indoors · Feb 20 – Mar 6
TomatoesTransplant · Apr 24 – May 8
Peppers, eggplantStart indoors · Feb 6 – Feb 20
Peppers, eggplantTransplant · May 1 – May 15
BeansSow outdoors · Apr 24 – May 8
Sweet cornSow outdoors · Apr 24 – May 8
Cucumbers, squashSow outdoors · Apr 24 – May 8
Fall lettuce, spinachSow outdoors · Aug 24 – Sep 7
GarlicPlant cloves · Oct 5 – Nov 9
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 17) and first fall frost (Oct 19) 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 64443 came on Mar 7 — 15 days earlier than the 1991–2020 average (Mar 22).

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 Easton, MO

The soil mapped at the center of ZIP 64443 is Sharpsburg — silt loam, moderately well drained.

TextureSilt loama good balance for most vegetables
pH6.1slightly acidic; most vegetables like 6.0–7.0
DrainageModerately well drainednatural drainage class
Organic matter3%moderate
Hydrologic groupCwater soaks in slowly
Farmland classFarmland of statewide importanceUSDA classification

Map unit: Sharpsburg silt loam, 5 to 9 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 64443; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Easton, MO

Summer high87 °Faverage high, July
Winter low16 °Faverage low, January
Hot days33days a year at 90 °F or more
Freezing nights130nights a year at 32 °F or less
Growing degree days3,638base 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
Precipitation38 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 19 °F 40°19° FebMarch: average high 53 °F, low 30 °F 53°30° MarApril: average high 64 °F, low 40 °F 64°40° AprMay: average high 73 °F, low 52 °F 73°52° MayJune: average high 84 °F, low 63 °F 84°63° JunJuly: average high 87 °F, low 67 °F 87°67° JulAugust: average high 85 °F, low 64 °F 85°64° AugSeptember: average high 79 °F, low 55 °F 79°55° SepOctober: average high 66 °F, low 42 °F 66°42° OctNovember: average high 51 °F, low 31 °F 51°31° NovDecember: average high 40 °F, low 21 °F 40°21° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 0.98 in precipitation 1.0 JanFebruary: 1.28 in precipitation 1.3 FebMarch: 2.38 in precipitation 2.4 MarApril: 4.01 in precipitation 4.0 AprMay: 5.39 in precipitation 5.4 MayJune: 4.87 in precipitation 4.9 JunJuly: 5.01 in precipitation 5.0 JulAugust: 3.96 in precipitation 4.0 AugSeptember: 3.75 in precipitation 3.8 SepOctober: 3.02 in precipitation 3.0 OctNovember: 1.87 in precipitation 1.9 NovDecember: 1.49 in precipitation 1.5 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Cosby 2w, MO (8 mi away); precipitation: St. Joseph 4.4 E, MO (5 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6a.

645076a
Saint Joseph, MO · 5 mi
644906a
Stewartsville, MO · 7 mi
644366a
Cosby, MO · 8 mi
644306a
Clarksdale, MO · 8 mi
644016a
Agency, MO · 8 mi
645066a
Saint Joseph, MO · 9 mi
644546a
Gower, MO · 10 mi
645036a
Saint Joseph, MO · 10 mi

Missouri planting zones →

Questions about 64443

What planting zone is ZIP code 64443?

ZIP code 64443 (Easton, 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 Easton, MO?

The median last spring frost (32 °F) near 64443 is April 17; after May 1 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Cosby 2w station.

When is the first frost in Easton, MO?

The median first fall frost near 64443 is October 19, giving a median frost-free growing season of 184 days.

When should I plant tomatoes in 64443?

Start tomato seeds indoors around Feb 20 – Mar 6 and set transplants outside around Apr 24 – May 8, one to three weeks after the median last frost.

How much rain and snow does 64443 get?

About 38 inches of precipitation a year (NOAA 1991–2020 normals, St. Joseph 4.4 E station).

How hot do summers get in Easton, MO?

The average high peaks at 87 °F in July, with about 33 days a year at 90 °F or more.

What kind of soil does 64443 have?

The USDA soil survey maps Sharpsburg at the center of ZIP 64443: silt loam, moderately well drained, pH about 6.1 (slightly acidic).

Did spring come early in Easton, MO in 2026?

Spring leaf-out near 64443 came on Mar 7 in 2026, 15 days earlier than the 1991–2020 average (Mar 22), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Easton, MO?

Intermediate onions: the longest day near 64443 is 14 h 59 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 64443 change?

Yes. The 2012 USDA map put 64443 in zone 5b; the 2023 map puts it in zone 6a. The newer map uses 1991–2020 data and more weather stations.