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

Planting zone for 39474 — Prentiss, MS

ZIP code 39474 (Prentiss, Jefferson Davis County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 12 and the first fall frost November 10.

Where ZIP 39474 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 12

First frostNov 10

2012 zone8b

Same zone as on the 2012 map. 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 Prentiss, 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 Prentiss, MS

JanFebMarAprMayJunJulAugSepOctNovDec

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

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

Safe for tender plantsApril 3only 10% chance of frost after

First fall frostNovember 10median — 10% chance by Oct 23

Growing season242 daysfrost-free, median

A hard freeze (28 °F) usually ends around February 27 and returns around November 22.

From the NOAA station Monticello, MS — 16 miles away, elevation 190 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 39474

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Jan 29 – Feb 12

SpinachSow outdoors · Jan 29 – Feb 19

Broccoli, cabbageStart indoors · Jan 1 – Jan 15

Broccoli, cabbageTransplant · Feb 19 – Mar 5

Onion setsPlant outdoors · Feb 12 – Feb 26

PotatoesPlant outdoors · Feb 19 – Mar 5

LettuceSow outdoors · Feb 12 – Feb 26

Carrots, beetsSow outdoors · Feb 19 – Mar 5

TomatoesStart indoors · Jan 15 – Jan 29

TomatoesTransplant · Mar 19 – Apr 2

Peppers, eggplantStart indoors · Jan 1 – Jan 15

Peppers, eggplantTransplant · Mar 26 – Apr 9

BeansSow outdoors · Mar 19 – Apr 2

Sweet cornSow outdoors · Mar 19 – Apr 2

Cucumbers, squashSow outdoors · Mar 19 – Apr 2

Fall lettuce, spinachSow outdoors · Sep 15 – Sep 29

GarlicPlant cloves · Oct 27 – Dec 1

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 12) and first fall frost (Nov 10) 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 39474 came on Feb 1 — about the same time as the 1991–2020 average (Jan 31).

average
Jan 312026
Feb 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 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 Prentiss, MS.

Soil in Prentiss, MS

The soil mapped at the center of ZIP 39474 is Ora — sandy loam, moderately well drained.

TextureSandy loamdrains and warms fast; dries out and needs more feeding

pH4.6strongly acidic; most vegetables like 6.0–7.0

DrainageModerately well drainednatural drainage class

Organic matter2%moderate

Hydrologic groupCwater soaks in slowly

Farmland classprime farmlandUSDA classification

Map unit: Ora sandy loam, 0 to 2 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 39474; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Prentiss, MS

Summer high96 °Faverage high, July

Winter low36 °Faverage low, January

Hot days105days a year at 90 °F or more

Freezing nights45nights a year at 32 °F or less

Growing degree days6,663base 50 °F — the season’s usable heat

Longest day14 h 13 mindaylight on June 21

Shortest day10 h 05 mindaylight on December 21

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

Precipitation61.5 inper year, rain and melted snow

Snowfall1 inper year

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Monticello, MS (16 mi away); precipitation: Prentiss, MS (3 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8b.

394278b

Carson, MS · 9 mi

396638b

Silver Creek, MS · 11 mi

394218b

Bassfield, MS · 12 mi

396568b

Oak Vale, MS · 13 mi

391408b

Newhebron, MS · 13 mi

391198b

Mount Olive, MS · 14 mi

Mississippi planting zones →

Questions about 39474

What planting zone is ZIP code 39474?

ZIP code 39474 (Prentiss, 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 Prentiss, MS?

The median last spring frost (32 °F) near 39474 is March 12; after April 3 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Monticello station.

When is the first frost in Prentiss, MS?

The median first fall frost near 39474 is November 10, giving a median frost-free growing season of 242 days.

When should I plant tomatoes in 39474?

Start tomato seeds indoors around Jan 15 – Jan 29 and set transplants outside around Mar 19 – Apr 2, one to three weeks after the median last frost.

How much rain and snow does 39474 get?

About 61.5 inches of precipitation a year and 1 inches of snowfall (NOAA 1991–2020 normals, Prentiss station).

How hot do summers get in Prentiss, MS?

The average high peaks at 96 °F in July, with about 105 days a year at 90 °F or more.

What kind of soil does 39474 have?

The USDA soil survey maps Ora at the center of ZIP 39474: sandy loam, moderately well drained, pH about 4.6 (strongly acidic).

Did spring come early in Prentiss, MS in 2026?

Spring leaf-out near 39474 came on Feb 1 in 2026, about the same as the 1991–2020 average (Jan 31), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Prentiss, MS?

Short-day onions: the longest day near 39474 is 14 h 13 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.