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

Planting zone for 65355 — Warsaw, MO

ZIP code 65355 (Warsaw, Benton County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 7 and the first fall frost October 30.

Where ZIP 65355 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 7
First frostOct 30
2012 zone6b

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 6b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Warsaw, 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 Warsaw, MO

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 7median — 50% chance of a later frost
Safe for tender plantsApril 22only 10% chance of frost after
First fall frostOctober 30median — 10% chance by Oct 16
Growing season205 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 29 and returns around November 10.

From the NOAA station Truman Dam & Rsvr, MO — 4 miles away, elevation 755 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 65355

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 24 – Mar 10
SpinachSow outdoors · Feb 24 – Mar 17
Broccoli, cabbageStart indoors · Jan 27 – Feb 10
Broccoli, cabbageTransplant · Mar 17 – Mar 31
Onion setsPlant outdoors · Mar 10 – Mar 24
PotatoesPlant outdoors · Mar 17 – Mar 31
LettuceSow outdoors · Mar 10 – Mar 24
Carrots, beetsSow outdoors · Mar 17 – Mar 31
TomatoesStart indoors · Feb 10 – Feb 24
TomatoesTransplant · Apr 14 – Apr 28
Peppers, eggplantStart indoors · Jan 27 – Feb 10
Peppers, eggplantTransplant · Apr 21 – May 5
BeansSow outdoors · Apr 14 – Apr 28
Sweet cornSow outdoors · Apr 14 – Apr 28
Cucumbers, squashSow outdoors · Apr 14 – Apr 28
Fall lettuce, spinachSow outdoors · Sep 4 – Sep 18
GarlicPlant cloves · Oct 16 – Nov 20
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 7) and first fall frost (Oct 30) 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 65355 came on Feb 25 — 16 days earlier than the 1991–2020 average (Mar 13).

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 Warsaw, MO

The soil mapped at the center of ZIP 65355 is Bardley — very gravelly silt loam, well drained.

TextureVery gravelly silt loama good balance for most vegetables
pH5.5moderately acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter1.25%low — add compost
Hydrologic groupDwater soaks in very slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Bardley very gravelly silt loam, 8 to 35 percent slopes, stony.

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 65355; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Warsaw, MO

Summer high90 °Faverage high, July
Winter low22 °Faverage low, January
Hot days43days a year at 90 °F or more
Freezing nights105nights a year at 32 °F or less
Growing degree days4,299base 50 °F — the season’s usable heat
Longest day14 h 50 mindaylight on June 21
Shortest day9 h 30 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation43.5 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 43 °F, low 22 °F 43°22° JanFebruary: average high 47 °F, low 25 °F 47°25° FebMarch: average high 57 °F, low 34 °F 57°34° MarApril: average high 68 °F, low 44 °F 68°44° AprMay: average high 76 °F, low 55 °F 76°55° MayJune: average high 85 °F, low 65 °F 85°65° JunJuly: average high 90 °F, low 69 °F 90°69° JulAugust: average high 89 °F, low 67 °F 89°67° AugSeptember: average high 82 °F, low 59 °F 82°59° SepOctober: average high 70 °F, low 46 °F 70°46° OctNovember: average high 57 °F, low 36 °F 57°36° NovDecember: average high 46 °F, low 27 °F 46°27° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 1.75 in precipitation 1.8 JanFebruary: 2.14 in precipitation 2.1 FebMarch: 3.04 in precipitation 3.0 MarApril: 4.60 in precipitation 4.6 AprMay: 5.52 in precipitation 5.5 MayJune: 5.24 in precipitation 5.2 JunJuly: 4.70 in precipitation 4.7 JulAugust: 3.96 in precipitation 4.0 AugSeptember: 4.11 in precipitation 4.1 SepOctober: 3.45 in precipitation 3.5 OctNovember: 3.06 in precipitation 3.1 NovDecember: 1.97 in precipitation 2.0 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Truman Dam & Rsvr, MO (4 mi away); precipitation: Truman Dam & Rsvr, MO (4 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6b.

653386b
Lincoln, MO · 10 mi
653266b
Edwards, MO · 13 mi
657356b
Quincy, MO · 14 mi
657796b
Wheatland, MO · 16 mi
656346b
Cross Timbers, MO · 17 mi
653256b
Cole Camp, MO · 18 mi
647406b
Deepwater, MO · 18 mi
647636b
Lowry City, MO · 19 mi

Missouri planting zones →

Questions about 65355

What planting zone is ZIP code 65355?

ZIP code 65355 (Warsaw, 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 Warsaw, MO?

The median last spring frost (32 °F) near 65355 is April 7; after April 22 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Truman Dam & Rsvr station.

When is the first frost in Warsaw, MO?

The median first fall frost near 65355 is October 30, giving a median frost-free growing season of 205 days.

When should I plant tomatoes in 65355?

Start tomato seeds indoors around Feb 10 – Feb 24 and set transplants outside around Apr 14 – Apr 28, one to three weeks after the median last frost.

How much rain and snow does 65355 get?

About 43.5 inches of precipitation a year (NOAA 1991–2020 normals, Truman Dam & Rsvr station).

How hot do summers get in Warsaw, MO?

The average high peaks at 90 °F in July, with about 43 days a year at 90 °F or more.

What kind of soil does 65355 have?

The USDA soil survey maps Bardley at the center of ZIP 65355: very gravelly silt loam, well drained, pH about 5.5 (moderately acidic).

Did spring come early in Warsaw, MO in 2026?

Spring leaf-out near 65355 came on Feb 25 in 2026, 16 days earlier than the 1991–2020 average (Mar 13), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Warsaw, MO?

Intermediate onions: the longest day near 65355 is 14 h 50 min, so day-neutral types bulb best; long-day varieties may not bulb fully.