Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 29, 2026

Planting zone for 63069 — Pacific, MO

ZIP code 63069 (Pacific, Franklin County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 12 and the first fall frost October 23.

Where ZIP 63069 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 12

First frostOct 23

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 Pacific, 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 Pacific, MO

JanFebMarAprMayJunJulAugSepOctNovDec

Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free

Last spring frostApril 12median — 50% chance of a later frost

Safe for tender plantsApril 27only 10% chance of frost after

First fall frostOctober 23median — 10% chance by Oct 11

Growing season193 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 31 and returns around November 3.

From the NOAA station St Louis Sprt Of S L Airport, MO — 14 miles away, elevation 463 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 63069

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Mar 1 – Mar 15

SpinachSow outdoors · Mar 1 – Mar 22

Broccoli, cabbageStart indoors · Feb 1 – Feb 15

Broccoli, cabbageTransplant · Mar 22 – Apr 5

Onion setsPlant outdoors · Mar 15 – Mar 29

PotatoesPlant outdoors · Mar 22 – Apr 5

LettuceSow outdoors · Mar 15 – Mar 29

Carrots, beetsSow outdoors · Mar 22 – Apr 5

TomatoesStart indoors · Feb 15 – Mar 1

TomatoesTransplant · Apr 19 – May 3

Peppers, eggplantStart indoors · Feb 1 – Feb 15

Peppers, eggplantTransplant · Apr 26 – May 10

BeansSow outdoors · Apr 19 – May 3

Sweet cornSow outdoors · Apr 19 – May 3

Cucumbers, squashSow outdoors · Apr 19 – May 3

Fall lettuce, spinachSow outdoors · Aug 28 – Sep 11

GarlicPlant cloves · Oct 9 – Nov 13

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 12) and first fall frost (Oct 23) 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 63069 came on Mar 3 — 11 days earlier than the 1991–2020 average (Mar 14).

average
Mar 142026
Mar 3

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 Pacific, MO

The soil mapped at the center of ZIP 63069 is Rueter — gravelly silt loam, somewhat excessively drained.

TextureGravelly silt loama good balance for most vegetables

pH5.0strongly acidic; most vegetables like 6.0–7.0

DrainageSomewhat excessively drainednatural drainage class

Organic matter3.4%moderate

Hydrologic groupCwater soaks in slowly

Farmland classNot prime farmlandUSDA classification

Map unit: Rueter gravelly silt loam, 3 to 15 percent slopes, very 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 63069; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Pacific, MO

Summer high90 °Faverage high, July

Winter low22 °Faverage low, January

Hot days44days a year at 90 °F or more

Freezing nights105nights a year at 32 °F or less

Growing degree days4,209base 50 °F — the season’s usable heat

Longest day14 h 51 mindaylight on June 21

Shortest day9 h 29 mindaylight on December 21

Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully

Precipitation43.3 inper year, rain and melted snow

Snowfall11 inper year

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: St Louis Sprt Of S L Airport, MO (14 mi away); precipitation: Pacific, MO (4 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

2 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

Gray Summit, MO · 7 mi

630166b

Cedar Hill, MO · 8 mi

Robertsville, MO · 9 mi

Missouri planting zones →

Questions about 63069

What planting zone is ZIP code 63069?

ZIP code 63069 (Pacific, 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 Pacific, MO?

The median last spring frost (32 °F) near 63069 is April 12; after April 27 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, St Louis Sprt Of S L Airport station.

When is the first frost in Pacific, MO?

The median first fall frost near 63069 is October 23, giving a median frost-free growing season of 193 days.

When should I plant tomatoes in 63069?

Start tomato seeds indoors around Feb 15 – Mar 1 and set transplants outside around Apr 19 – May 3, one to three weeks after the median last frost.

How much rain and snow does 63069 get?

About 43.3 inches of precipitation a year and 11 inches of snowfall (NOAA 1991–2020 normals, Pacific station).

How hot do summers get in Pacific, MO?

The average high peaks at 90 °F in July, with about 44 days a year at 90 °F or more.

What kind of soil does 63069 have?

The USDA soil survey maps Rueter at the center of ZIP 63069: gravelly silt loam, somewhat excessively drained, pH about 5.0 (strongly acidic).

Did spring come early in Pacific, MO in 2026?

Spring leaf-out near 63069 came on Mar 3 in 2026, 11 days earlier than the 1991–2020 average (Mar 14), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Pacific, MO?

Intermediate onions: the longest day near 63069 is 14 h 51 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 63069 change?

Yes. The 2012 USDA map put 63069 in zone 6a; the 2023 map puts it in zone 6b. The newer map uses 1991–2020 data and more weather stations.