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

Planting zone for Overland Park, KS

Overland Park, KS is in USDA zone 6b across its 13 ZIP codes. The median last spring frost is April 10 and the first fall frost October 29.

Overland Park on the zone map

Outlined: its 10 ZIP code areas · 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
ZIP codes13
Last frostApr 10
First frostOct 29
Growing season202 days

6b 13 ZIPs

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Overland Park, KS…

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 Overland Park, KS

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 10median — 50% chance of a later frost
Safe for tender plantsApril 24only 10% chance of frost after
First fall frostOctober 29median — 10% chance by Oct 13
Growing season202 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 31 and returns around November 6.

From the NOAA station Olathe 3e, KS, elevation 1,056 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 Overland Park

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 27 – Mar 13
SpinachSow outdoors · Feb 27 – Mar 20
Broccoli, cabbageStart indoors · Jan 30 – Feb 13
Broccoli, cabbageTransplant · Mar 20 – Apr 3
Onion setsPlant outdoors · Mar 13 – Mar 27
PotatoesPlant outdoors · Mar 20 – Apr 3
LettuceSow outdoors · Mar 13 – Mar 27
Carrots, beetsSow outdoors · Mar 20 – Apr 3
TomatoesStart indoors · Feb 13 – Feb 27
TomatoesTransplant · Apr 17 – May 1
Peppers, eggplantStart indoors · Jan 30 – Feb 13
Peppers, eggplantTransplant · Apr 24 – May 8
BeansSow outdoors · Apr 17 – May 1
Sweet cornSow outdoors · Apr 17 – May 1
Cucumbers, squashSow outdoors · Apr 17 – May 1
Fall lettuce, spinachSow outdoors · Sep 3 – Sep 17
GarlicPlant cloves · Oct 15 – Nov 19
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 10) and first fall frost (Oct 29) 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 66210 came on Feb 19 — 25 days earlier than the 1991–2020 average (Mar 16).

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).

Native plants for zone 6b in Kansas

431 plants native to the lower 48 states, recorded in Kansas, and rated by the USDA to survive −5 °F or colder — the bottom of zone 6b. Each links to its USDA PLANTS profile.

Trees 37

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °Fbitternut hickory75 ft · blooms mid spring · high shade tolerance · to −47 °Fblack locust60 ft · blooms spring · high shade tolerance · to −37 °Fblack maple100 ft · blooms late spring · low shade tolerance · to −47 °F

Shrubs 64

alderleaf mountain mahogany15 ft · blooms late spring · medium shade tolerance · to −41 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °FAmerican plum24 ft · blooms mid spring · high shade tolerance · to −38 °Fblack cherry80 ft · blooms late spring · high shade tolerance · to −33 °Fblackhaw16 ft · blooms spring · low shade tolerance · to −33 °Fblackjack oak25 ft · blooms mid spring · high shade tolerance · to −13 °F

Wildflowers & perennials 176

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °FAmerican bur-reed3 ft · blooms indeterminate · medium shade tolerance · to −33 °FAmerican licorice4 ft · blooms late spring · medium shade tolerance · to −38 °FAmerican lotus3 ft · blooms mid summer · high shade tolerance · to −36 °FAmerican pokeweed7 ft · blooms mid summer · low shade tolerance · to −33 °FAmerican speedwell0.8 ft · blooms mid summer · low shade tolerance · to −38 °F

Grasses 134

alkali cordgrass3 ft · blooms late summer · high shade tolerance · to −38 °Falkali sacaton3 ft · blooms mid summer · high shade tolerance · to −38 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °Fbeaked spikerush3 ft · blooms late spring · high shade tolerance · to −28 °FBicknell's sedge3 ft · blooms late spring · low shade tolerance · to −38 °Fbig bluestem6 ft · blooms summer · high shade tolerance · to −46 °F

Vines 11

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Ffrost grape83 ft · blooms late spring · medium shade tolerance · to −23 °Fgraybark grape50 ft · blooms late spring · medium shade tolerance · to −8 °Fheartleaf peppervine2 ft · blooms late spring · low shade tolerance · to −8 °Friverbank grape45 ft · blooms late spring · medium shade tolerance · to −33 °F

Source: USDA, NRCS. 2026. The PLANTS Database (plants.usda.gov), National Plant Data Team — state distribution, native status and the “Temperature, Minimum” characteristic. Check light, moisture and soil needs before buying; local nurseries and your state native plant society can confirm what thrives in Overland Park, KS.

Soil in Overland Park, KS

The soil mapped at the center of ZIP 66210 is Chase — silt loam, somewhat poorly drained.

TextureSilt loama good balance for most vegetables
pH6.5neutral; most vegetables like 6.0–7.0
DrainageSomewhat poorly drainedconsider raised beds
Organic matter3%moderate
Hydrologic groupDwater soaks in very slowly
Farmland classprime farmlandUSDA classification

Map unit: Chase silt loam, occasionally flooded.

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 66210; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Overland Park, KS

Summer high88 °Faverage high, July
Winter low20 °Faverage low, January
Hot days34days a year at 90 °F or more
Freezing nights98nights a year at 32 °F or less
Growing degree days4,094base 50 °F — the season’s usable heat
Longest day14 h 54 mindaylight on June 21
Shortest day9 h 26 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation40.9 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 39 °F, low 20 °F 39°20° JanFebruary: average high 44 °F, low 24 °F 44°24° FebMarch: average high 55 °F, low 34 °F 55°34° MarApril: average high 65 °F, low 44 °F 65°44° AprMay: average high 75 °F, low 56 °F 75°56° MayJune: average high 84 °F, low 65 °F 84°65° JunJuly: average high 88 °F, low 69 °F 88°69° JulAugust: average high 87 °F, low 67 °F 87°67° AugSeptember: average high 79 °F, low 58 °F 79°58° SepOctober: average high 68 °F, low 47 °F 68°47° OctNovember: average high 54 °F, low 35 °F 54°35° NovDecember: average high 43 °F, low 25 °F 43°25° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 1.37 in precipitation 1.4 JanFebruary: 1.70 in precipitation 1.7 FebMarch: 2.43 in precipitation 2.4 MarApril: 4.43 in precipitation 4.4 AprMay: 5.62 in precipitation 5.6 MayJune: 5.31 in precipitation 5.3 JunJuly: 4.36 in precipitation 4.4 JulAugust: 4.36 in precipitation 4.4 AugSeptember: 4.10 in precipitation 4.1 SepOctober: 3.33 in precipitation 3.3 OctNovember: 2.34 in precipitation 2.3 NovDecember: 1.59 in precipitation 1.6 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Olathe 3e, KS (4 mi away); precipitation: Overland Park S Of 87th, KS (2 mi away). Daylight is calculated from latitude.

ZIP codes in Overland Park

662046b
−5 to 0 °F
662076b
−5 to 0 °F
662106b
−5 to 0 °F
662126b
−5 to 0 °F
662136b
−5 to 0 °F
662146b
−5 to 0 °F
662216b
−5 to 0 °F
662236b
−5 to 0 °F
662246b
−5 to 0 °F
662256b
−5 to 0 °F
662516b
−5 to 0 °F
662826b
−5 to 0 °F
662836b
−5 to 0 °F

Kansas planting zones →

Questions about Overland Park

What planting zone is Overland Park, KS?

Overland Park, KS is in USDA hardiness zone 6b on the 2023 map (6b: −5 to 0 °F).

When is the last frost in Overland Park, KS?

The median last spring frost is April 10 and the median first fall frost is October 29 (NOAA 1991–2020 normals, Olathe 3e station).

When can I plant a garden in Overland Park, KS?

Cool-season crops like peas and spinach go in around Feb 27 – Mar 20; tomatoes, peppers, beans and squash after about Apr 17, once frost risk has passed.

What kind of onions grow in Overland Park, KS?

Intermediate onions: the longest day is 14 h 54 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

How much rain and snow does Overland Park, KS get?

About 40.9 inches of precipitation a year (NOAA 1991–2020 normals).