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

Planting zone for 63820 — Anniston, MO

ZIP code 63820 (Anniston, Mississippi County) is in USDA zone 7b: the coldest winter night averages 5 to 10 °F. The median last spring frost is March 26 and the first fall frost November 6.

Where ZIP 63820 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.

Zone7b5 to 10 °F

Coldest night−15 to −12.2 °C

Last frostMar 26

First frostNov 6

2012 zone7a

Was 7a 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 7b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Anniston, 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 Anniston, MO

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMarch 26median — 50% chance of a later frost

Safe for tender plantsApril 9only 10% chance of frost after

First fall frostNovember 6median — 10% chance by Oct 21

Growing season225 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 14 and returns around November 19.

From the NOAA station Sikeston Pwr Stn, MO — 17 miles away, elevation 312 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 63820

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 12 – Feb 26

SpinachSow outdoors · Feb 12 – Mar 5

Broccoli, cabbageStart indoors · Jan 15 – Jan 29

Broccoli, cabbageTransplant · Mar 5 – Mar 19

Onion setsPlant outdoors · Feb 26 – Mar 12

PotatoesPlant outdoors · Mar 5 – Mar 19

LettuceSow outdoors · Feb 26 – Mar 12

Carrots, beetsSow outdoors · Mar 5 – Mar 19

TomatoesStart indoors · Jan 29 – Feb 12

TomatoesTransplant · Apr 2 – Apr 16

Peppers, eggplantStart indoors · Jan 15 – Jan 29

Peppers, eggplantTransplant · Apr 9 – Apr 23

BeansSow outdoors · Apr 2 – Apr 16

Sweet cornSow outdoors · Apr 2 – Apr 16

Cucumbers, squashSow outdoors · Apr 2 – Apr 16

Fall lettuce, spinachSow outdoors · Sep 11 – Sep 25

GarlicPlant cloves · Oct 23 – Nov 27

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 26) and first fall frost (Nov 6) 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 63820 came on Mar 1 — 4 days earlier than the 1991–2020 average (Mar 5).

average
Mar 52026
Mar 1

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 7b in Missouri

542 plants native to the lower 48 states, recorded in Missouri, and rated by the USDA to survive 5 °F or colder — the bottom of zone 7b. Each links to its USDA PLANTS profile.

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 Anniston, MO.

Soil in Anniston, MO

The soil mapped at the center of ZIP 63820 is Lilbourn — fine sandy loam, somewhat poorly drained.

TextureFine sandy loamdrains and warms fast; dries out and needs more feeding

pH5.9moderately acidic; most vegetables like 6.0–7.0

DrainageSomewhat poorly drainedconsider raised beds

Organic matter1.2%low — add compost

Hydrologic groupB/Dmoderate when drained; wet otherwise

Farmland classPrime farmland if drainedUSDA classification

Map unit: Lilbourn fine sandy loam, 0 to 1 percent slopes.

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 63820; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Anniston, MO

Summer high91 °Faverage high, July

Winter low28 °Faverage low, January

Hot days56days a year at 90 °F or more

Freezing nights74nights a year at 32 °F or less

Growing degree days4,933base 50 °F — the season’s usable heat

Longest day14 h 41 mindaylight on June 21

Shortest day9 h 38 mindaylight on December 21

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

Precipitation52 inper year, rain and melted snow

Average high and low, by month

Precipitation by month inches

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Sikeston Pwr Stn, MO (17 mi away); precipitation: Anniston 1.9 Wnw, MO (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

638347b

Charleston, MO · 7 mi

638457b

East Prairie, MO · 8 mi

Wolf Island, MO · 9 mi

Missouri planting zones →

Questions about 63820

What planting zone is ZIP code 63820?

ZIP code 63820 (Anniston, MO) is in USDA hardiness zone 7b on the 2023 map: the coldest night of an average winter reaches 5 to 10 °F (−15 to −12.2 °C).

When is the last frost in Anniston, MO?

The median last spring frost (32 °F) near 63820 is March 26; after April 9 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Sikeston Pwr Stn station.

When is the first frost in Anniston, MO?

The median first fall frost near 63820 is November 6, giving a median frost-free growing season of 225 days.

When should I plant tomatoes in 63820?

Start tomato seeds indoors around Jan 29 – Feb 12 and set transplants outside around Apr 2 – Apr 16, one to three weeks after the median last frost.

How much rain and snow does 63820 get?

About 52 inches of precipitation a year (NOAA 1991–2020 normals, Anniston 1.9 Wnw station).

How hot do summers get in Anniston, MO?

The average high peaks at 91 °F in July, with about 56 days a year at 90 °F or more.

What kind of soil does 63820 have?

The USDA soil survey maps Lilbourn at the center of ZIP 63820: fine sandy loam, somewhat poorly drained, pH about 5.9 (moderately acidic).

Did spring come early in Anniston, MO in 2026?

Spring leaf-out near 63820 came on Mar 1 in 2026, 4 days earlier than the 1991–2020 average (Mar 5), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Anniston, MO?

Intermediate onions: the longest day near 63820 is 14 h 41 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 63820 change?

Yes. The 2012 USDA map put 63820 in zone 7a; the 2023 map puts it in zone 7b. The newer map uses 1991–2020 data and more weather stations.