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

Planting zone for 39119 — Mount Olive, MS

ZIP code 39119 (Mount Olive, Covington County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 17 and the first fall frost November 12.

Where ZIP 39119 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 17
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 Mount Olive, 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 Mount Olive, MS

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 17median — 50% chance of a later frost
Safe for tender plantsApril 4only 10% chance of frost after
First fall frostNovember 12median — 10% chance by Oct 30
Growing season238 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 4 and returns around November 26.

From the NOAA station Collins, MS — 10 miles away, elevation 289 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 39119

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 3 – Feb 17
SpinachSow outdoors · Feb 3 – Feb 24
Broccoli, cabbageStart indoors · Jan 6 – Jan 20
Broccoli, cabbageTransplant · Feb 24 – Mar 10
Onion setsPlant outdoors · Feb 17 – Mar 3
PotatoesPlant outdoors · Feb 24 – Mar 10
LettuceSow outdoors · Feb 17 – Mar 3
Carrots, beetsSow outdoors · Feb 24 – Mar 10
TomatoesStart indoors · Jan 20 – Feb 3
TomatoesTransplant · Mar 24 – Apr 7
Peppers, eggplantStart indoors · Jan 6 – Jan 20
Peppers, eggplantTransplant · Mar 31 – Apr 14
BeansSow outdoors · Mar 24 – Apr 7
Sweet cornSow outdoors · Mar 24 – Apr 7
Cucumbers, squashSow outdoors · Mar 24 – Apr 7
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 17) 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 39119 came on Feb 1 — about the same time as the 1991–2020 average (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.

Trees 79

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican beech80 ft · blooms mid spring · low shade tolerance · to −44 °FAmerican chestnut115 ft · blooms early summer · high shade tolerance · to −33 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °FAtlantic white cedar50 ft · blooms spring · medium shade tolerance · to −36 °F

Shrubs 115

aloe yucca15 ft · blooms early summer · medium shade tolerance · to −1 °Falternateleaf dogwood25 ft · blooms mid spring · low shade tolerance · to −47 °FAmerican beautyberry6 ft · blooms early summer · medium shade tolerance · to −8 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °FAmerican holly40 ft · blooms mid spring · low shade tolerance · to −20 °FAmerican hornbeam30 ft · blooms mid spring · low shade tolerance · to −34 °F

Wildflowers & perennials 165

American bur-reed3 ft · blooms indeterminate · medium shade tolerance · to −33 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °FAmerican lotus3 ft · blooms mid summer · high shade tolerance · to −36 °FAmerican pokeweed7 ft · blooms mid summer · low shade tolerance · to −33 °FAmerican spongeplant0.5 ft · blooms mid spring · high shade tolerance · to −24 °FAmerican water horehound1.8 ft · blooms early summer · low shade tolerance · to −38 °F

Grasses 147

American cupscale3 ft · blooms early summer · high shade tolerance · to −18 °Fautumn bluegrass1.5 ft · blooms late spring · medium shade tolerance · to −8 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °Fbig bluestem6 ft · blooms summer · high shade tolerance · to −46 °Fbig cordgrass8 ft · blooms spring · high shade tolerance · to −3 °Fbighead rush3 ft · blooms early summer · low shade tolerance · to 12 °F

Vines 13

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °FAmerican wisteria50 ft · blooms spring · low shade tolerance · to −3 °Fcatbird grape30 ft · blooms late spring · medium shade tolerance · to −13 °Fcupseed30 ft · blooms late spring · low shade tolerance · to −3 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Ffrost grape83 ft · blooms late spring · medium shade tolerance · to −23 °F

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 Mount Olive, MS.

Soil in Mount Olive, MS

The soil mapped at the center of ZIP 39119 is Smithdale — 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 groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: Ruston fine sandy loam, 12 to 17 percent slopes (smithdale).

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 39119; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Mount Olive, MS

Summer high94 °Faverage high, July
Winter low34 °Faverage low, January
Hot days70days a year at 90 °F or more
Freezing nights41nights a year at 32 °F or less
Growing degree days6,289base 50 °F — the season’s usable heat
Longest day14 h 13 mindaylight on June 21
Shortest day10 h 04 mindaylight on December 21
Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb
Precipitation60.2 inper year, rain and melted snow

Average high and low, by month

20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 62 °F, low 34 °F 62°34° JanFebruary: average high 66 °F, low 38 °F 66°38° FebMarch: average high 73 °F, low 44 °F 73°44° MarApril: average high 80 °F, low 52 °F 80°52° AprMay: average high 86 °F, low 61 °F 86°61° MayJune: average high 92 °F, low 68 °F 92°68° JunJuly: average high 94 °F, low 70 °F 94°70° JulAugust: average high 94 °F, low 70 °F 94°70° AugSeptember: average high 90 °F, low 65 °F 90°65° SepOctober: average high 81 °F, low 53 °F 81°53° OctNovember: average high 71 °F, low 43 °F 71°43° NovDecember: average high 64 °F, low 37 °F 64°37° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 5.88 in precipitation 5.9 JanFebruary: 5.52 in precipitation 5.5 FebMarch: 5.65 in precipitation 5.7 MarApril: 5.57 in precipitation 5.6 AprMay: 4.16 in precipitation 4.2 MayJune: 5.34 in precipitation 5.3 JunJuly: 5.42 in precipitation 5.4 JulAugust: 5.23 in precipitation 5.2 AugSeptember: 3.81 in precipitation 3.8 SepOctober: 3.72 in precipitation 3.7 OctNovember: 4.34 in precipitation 4.3 NovDecember: 5.56 in precipitation 5.6 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Collins, MS (10 mi away); precipitation: P Harrison Dry Ck Wp, MS (3 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8b.

394288b
Collins, MS · 9 mi
391118b
Magee, MS · 10 mi
391168b
Mize, MS · 13 mi
394748b
Prentiss, MS · 14 mi
391688b
Taylorsville, MS · 16 mi
391148b
Mendenhall, MS · 17 mi
394798b
Seminary, MS · 19 mi
390628b
D Lo, MS · 21 mi

Mississippi planting zones →

Questions about 39119

What planting zone is ZIP code 39119?

ZIP code 39119 (Mount Olive, 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 Mount Olive, MS?

The median last spring frost (32 °F) near 39119 is March 17; after April 4 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Collins station.

When is the first frost in Mount Olive, MS?

The median first fall frost near 39119 is November 12, giving a median frost-free growing season of 238 days.

When should I plant tomatoes in 39119?

Start tomato seeds indoors around Jan 20 – Feb 3 and set transplants outside around Mar 24 – Apr 7, one to three weeks after the median last frost.

How much rain and snow does 39119 get?

About 60.2 inches of precipitation a year (NOAA 1991–2020 normals, P Harrison Dry Ck Wp station).

How hot do summers get in Mount Olive, MS?

The average high peaks at 94 °F in July, with about 70 days a year at 90 °F or more.

What kind of soil does 39119 have?

The USDA soil survey maps Smithdale at the center of ZIP 39119: fine sandy loam, well drained, pH about 5.0 (strongly acidic).

Did spring come early in Mount Olive, MS in 2026?

Spring leaf-out near 39119 came on Feb 1 in 2026, about the same as the 1991–2020 average (Feb 1), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Mount Olive, MS?

Short-day onions: the longest day near 39119 is 14 h 13 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 39119 change?

Yes. The 2012 USDA map put 39119 in zone 8a; the 2023 map puts it in zone 8b. The newer map uses 1991–2020 data and more weather stations.