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

Planting zone for 63015 — Catawissa, MO

ZIP code 63015 (Catawissa, Franklin County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 11 and the first fall frost October 23.

Where ZIP 63015 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 11
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 Catawissa, 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 Catawissa, MO

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 11median — 50% chance of a later frost
Safe for tender plantsApril 28only 10% chance of frost after
First fall frostOctober 23median — 10% chance by Oct 9
Growing season194 daysfrost-free, median

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

From the NOAA station Union, MO — 14 miles away, elevation 541 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 63015

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 28 – Mar 14
SpinachSow outdoors · Feb 28 – Mar 21
Broccoli, cabbageStart indoors · Jan 31 – Feb 14
Broccoli, cabbageTransplant · Mar 21 – Apr 4
Onion setsPlant outdoors · Mar 14 – Mar 28
PotatoesPlant outdoors · Mar 21 – Apr 4
LettuceSow outdoors · Mar 14 – Mar 28
Carrots, beetsSow outdoors · Mar 21 – Apr 4
TomatoesStart indoors · Feb 14 – Feb 28
TomatoesTransplant · Apr 18 – May 2
Peppers, eggplantStart indoors · Jan 31 – Feb 14
Peppers, eggplantTransplant · Apr 25 – May 9
BeansSow outdoors · Apr 18 – May 2
Sweet cornSow outdoors · Apr 18 – May 2
Cucumbers, squashSow outdoors · Apr 18 – May 2
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 11) 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 63015 came on Mar 1 — 13 days earlier than the 1991–2020 average (Mar 14).

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 Catawissa, MO

The soil mapped at the center of ZIP 63015 is Gatewood — very gravelly silt loam, moderately well drained.

TextureVery gravelly silt loama good balance for most vegetables
pH6.9neutral; most vegetables like 6.0–7.0
DrainageModerately well drainednatural drainage class
Organic matter3.8%moderate
Hydrologic groupDwater soaks in very slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Gatewood very gravelly silt loam, 15 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 63015; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Catawissa, MO

Summer high91 °Faverage high, July
Winter low23 °Faverage low, January
Hot days50days a year at 90 °F or more
Freezing nights101nights a year at 32 °F or less
Growing degree days4,333base 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

10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 43 °F, low 23 °F 43°23° JanFebruary: average high 48 °F, low 26 °F 48°26° FebMarch: average high 59 °F, low 35 °F 59°35° MarApril: average high 70 °F, low 45 °F 70°45° AprMay: average high 78 °F, low 55 °F 78°55° MayJune: average high 86 °F, low 63 °F 86°63° JunJuly: average high 91 °F, low 67 °F 91°67° JulAugust: average high 89 °F, low 66 °F 89°66° AugSeptember: average high 82 °F, low 57 °F 82°57° SepOctober: average high 70 °F, low 46 °F 70°46° OctNovember: average high 57 °F, low 35 °F 57°35° NovDecember: average high 46 °F, low 27 °F 46°27° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″6″January: 3.16 in precipitation, 4.4 in snowfall 3.2❄4 JanFebruary: 2.29 in precipitation, 3.3 in snowfall 2.3❄3 FebMarch: 3.61 in precipitation, 0.6 in snowfall 3.6❄1 MarApril: 4.75 in precipitation, 0.3 in snowfall 4.8 AprMay: 5.17 in precipitation 5.2 MayJune: 4.35 in precipitation 4.3 JunJuly: 3.70 in precipitation 3.7 JulAugust: 3.54 in precipitation 3.5 AugSeptember: 3.75 in precipitation 3.8 SepOctober: 3.37 in precipitation 3.4 OctNovember: 3.59 in precipitation, 0.6 in snowfall 3.6❄1 NovDecember: 2.05 in precipitation, 2.2 in snowfall 2.0❄2 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Union, MO (14 mi away); precipitation: Pacific, MO (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6b.

630726b
Robertsville, MO · 4 mi
630696b
Pacific, MO · 5 mi
630166b
Cedar Hill, MO · 6 mi
630416b
Grubville, MO · 8 mi
630896b
Villa Ridge, MO · 8 mi
630396b
Gray Summit, MO · 8 mi
630616b
Luebbering, MO · 9 mi
630236b
Dittmer, MO · 9 mi

Missouri planting zones →

Questions about 63015

What planting zone is ZIP code 63015?

ZIP code 63015 (Catawissa, 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 Catawissa, MO?

The median last spring frost (32 °F) near 63015 is April 11; after April 28 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Union station.

When is the first frost in Catawissa, MO?

The median first fall frost near 63015 is October 23, giving a median frost-free growing season of 194 days.

When should I plant tomatoes in 63015?

Start tomato seeds indoors around Feb 14 – Feb 28 and set transplants outside around Apr 18 – May 2, one to three weeks after the median last frost.

How much rain and snow does 63015 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 Catawissa, MO?

The average high peaks at 91 °F in July, with about 50 days a year at 90 °F or more.

What kind of soil does 63015 have?

The USDA soil survey maps Gatewood at the center of ZIP 63015: very gravelly silt loam, moderately well drained, pH about 6.9 (neutral).

Did spring come early in Catawissa, MO in 2026?

Spring leaf-out near 63015 came on Mar 1 in 2026, 13 days earlier than the 1991–2020 average (Mar 14), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Catawissa, MO?

Intermediate onions: the longest day near 63015 is 14 h 51 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 63015 change?

Yes. The 2012 USDA map put 63015 in zone 6a; the 2023 map puts it in zone 6b. The newer map uses 1991–2020 data and more weather stations.