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

Planting zone for 39309 — Meridian, MS

ZIP code 39309 (Meridian, Lauderdale County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 14 and the first fall frost November 12.

Where ZIP 39309 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.

Zone8b15 to 20 °F

Coldest night−9.4 to −6.7 °C

Last frostMar 14

First frostNov 12

2012 zone8a

Was 8a 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 8b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Meridian, MS…

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 Meridian, MS

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMarch 14median — 50% chance of a later frost

Safe for tender plantsApril 1only 10% chance of frost after

First fall frostNovember 12median — 10% chance by Oct 29

Growing season245 daysfrost-free, median

A hard freeze (28 °F) usually ends around February 27 and returns around November 27.

From the NOAA station Meridian Naas, MS — within 1 mile, elevation 272 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 39309

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Jan 31 – Feb 14

SpinachSow outdoors · Jan 31 – Feb 21

Broccoli, cabbageStart indoors · Jan 3 – Jan 17

Broccoli, cabbageTransplant · Feb 21 – Mar 7

Onion setsPlant outdoors · Feb 14 – Feb 28

PotatoesPlant outdoors · Feb 21 – Mar 7

LettuceSow outdoors · Feb 14 – Feb 28

Carrots, beetsSow outdoors · Feb 21 – Mar 7

TomatoesStart indoors · Jan 17 – Jan 31

TomatoesTransplant · Mar 21 – Apr 4

Peppers, eggplantStart indoors · Jan 3 – Jan 17

Peppers, eggplantTransplant · Mar 28 – Apr 11

BeansSow outdoors · Mar 21 – Apr 4

Sweet cornSow outdoors · Mar 21 – Apr 4

Cucumbers, squashSow outdoors · Mar 21 – Apr 4

Fall lettuce, spinachSow outdoors · Sep 17 – Oct 1

GarlicPlant cloves · Oct 29 – Dec 3

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 14) and first fall frost (Nov 12) 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 39309 came on Feb 10 — 6 days later than the 1991–2020 average (Feb 4).

average
Feb 42026
Feb 10

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 8b in Mississippi

526 plants native to the lower 48 states, recorded in Mississippi, and rated by the USDA to survive 15 °F or colder — the bottom of zone 8b. 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 Meridian, MS.

Soil in Meridian, MS

The soil mapped at the center of ZIP 39309 is Sweatman — fine sandy loam, well drained.

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

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

DrainageWell drainednatural drainage class

Organic matter1.25%low — add compost

Hydrologic groupCwater soaks in slowly

Farmland classFarmland of statewide importanceUSDA classification

Map unit: Sweatman fine sandy loam, 5 to 8 percent slopes, moderately eroded.

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 39309; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Meridian, MS

Summer high93 °Faverage high, July

Winter low37 °Faverage low, January

Hot days85days a year at 90 °F or more

Freezing nights44nights a year at 32 °F or less

Growing degree days6,282base 50 °F — the season’s usable heat

Longest day14 h 18 mindaylight on June 21

Shortest day10 h 00 mindaylight on December 21

Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb

Precipitation54.8 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: Meridian Naas, MS (within 1 mile); precipitation: Meridian Naas, MS (within 1 mile). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8b.

393358b

Lauderdale, MS · 4 mi

393268b

Daleville, MS · 7 mi

393528b

Porterville, MS · 9 mi

All 7 ZIP codes in Meridian → · Mississippi planting zones →

Questions about 39309

What planting zone is ZIP code 39309?

ZIP code 39309 (Meridian, MS) is in USDA hardiness zone 8b on the 2023 map: the coldest night of an average winter reaches 15 to 20 °F (−9.4 to −6.7 °C).

When is the last frost in Meridian, MS?

The median last spring frost (32 °F) near 39309 is March 14; after April 1 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Meridian Naas station.

When is the first frost in Meridian, MS?

The median first fall frost near 39309 is November 12, giving a median frost-free growing season of 245 days.

When should I plant tomatoes in 39309?

Start tomato seeds indoors around Jan 17 – Jan 31 and set transplants outside around Mar 21 – Apr 4, one to three weeks after the median last frost.

How much rain and snow does 39309 get?

About 54.8 inches of precipitation a year (NOAA 1991–2020 normals, Meridian Naas station).

How hot do summers get in Meridian, MS?

The average high peaks at 93 °F in July, with about 85 days a year at 90 °F or more.

What kind of soil does 39309 have?

The USDA soil survey maps Sweatman at the center of ZIP 39309: fine sandy loam, well drained, pH about 5.0 (strongly acidic).

Did spring come early in Meridian, MS in 2026?

Spring leaf-out near 39309 came on Feb 10 in 2026, 6 days later than the 1991–2020 average (Feb 4), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Meridian, MS?

Short-day onions: the longest day near 39309 is 14 h 18 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 39309 change?

Yes. The 2012 USDA map put 39309 in zone 8a; the 2023 map puts it in zone 8b. The newer map uses 1991–2020 data and more weather stations.