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

Planting zone for 39165 — Sibley, MS

ZIP code 39165 (Sibley, Adams County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 16 and the first fall frost November 9.

Where ZIP 39165 is

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 16
First frostNov 9
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 Sibley, 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 Sibley, MS

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 16median — 50% chance of a later frost
Safe for tender plantsApril 6only 10% chance of frost after
First fall frostNovember 9median — 10% chance by Oct 27
Growing season237 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 1 and returns around November 22.

From the NOAA station Natchez, MS — 9 miles away, elevation 194 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 39165

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 2 – Feb 16
SpinachSow outdoors · Feb 2 – Feb 23
Broccoli, cabbageStart indoors · Jan 5 – Jan 19
Broccoli, cabbageTransplant · Feb 23 – Mar 9
Onion setsPlant outdoors · Feb 16 – Mar 2
PotatoesPlant outdoors · Feb 23 – Mar 9
LettuceSow outdoors · Feb 16 – Mar 2
Carrots, beetsSow outdoors · Feb 23 – Mar 9
TomatoesStart indoors · Jan 19 – Feb 2
TomatoesTransplant · Mar 23 – Apr 6
Peppers, eggplantStart indoors · Jan 5 – Jan 19
Peppers, eggplantTransplant · Mar 30 – Apr 13
BeansSow outdoors · Mar 23 – Apr 6
Sweet cornSow outdoors · Mar 23 – Apr 6
Cucumbers, squashSow outdoors · Mar 23 – Apr 6
Fall lettuce, spinachSow outdoors · Sep 14 – Sep 28
GarlicPlant cloves · Oct 26 – Nov 30
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 16) and first fall frost (Nov 9) 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 39165 came on Jan 21 — 10 days earlier than the 1991–2020 average (Jan 31).

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 Sibley, MS.

Soil in Sibley, MS

The soil mapped at the center of ZIP 39165 is Natchez — silt loam, well drained.

TextureSilt loama good balance for most vegetables
pH6.2slightly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter1.75%low — add compost
Hydrologic groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: Gullied land-Natchez complex, 17 to 60 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 39165; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Sibley, MS

Summer high90 °Faverage high, July
Winter low36 °Faverage low, January
Hot days67days a year at 90 °F or more
Freezing nights40nights a year at 32 °F or less
Growing degree days5,811base 50 °F — the season’s usable heat
Longest day14 h 12 mindaylight on June 21
Shortest day10 h 06 mindaylight on December 21
Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb
Precipitation58.7 inper year, rain and melted snow

Average high and low, by month

30°40°50°60°70°80°90°100°32 °FJanuary: average high 57 °F, low 36 °F 57°36° JanFebruary: average high 61 °F, low 39 °F 61°39° FebMarch: average high 68 °F, low 47 °F 68°47° MarApril: average high 75 °F, low 53 °F 75°53° AprMay: average high 82 °F, low 62 °F 82°62° MayJune: average high 87 °F, low 69 °F 87°69° JunJuly: average high 90 °F, low 71 °F 90°71° JulAugust: average high 89 °F, low 71 °F 89°71° AugSeptember: average high 86 °F, low 65 °F 86°65° SepOctober: average high 77 °F, low 53 °F 77°53° OctNovember: average high 67 °F, low 43 °F 67°43° NovDecember: average high 59 °F, low 38 °F 59°38° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 5.67 in precipitation 5.7 JanFebruary: 5.44 in precipitation 5.4 FebMarch: 5.00 in precipitation 5.0 MarApril: 5.06 in precipitation 5.1 AprMay: 4.05 in precipitation 4.0 MayJune: 5.02 in precipitation 5.0 JunJuly: 4.65 in precipitation 4.7 JulAugust: 5.43 in precipitation 5.4 AugSeptember: 3.94 in precipitation 3.9 SepOctober: 4.31 in precipitation 4.3 OctNovember: 5.05 in precipitation 5.0 NovDecember: 5.07 in precipitation 5.1 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Natchez, MS (9 mi away); precipitation: Vidalia #2, LA (7 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

391218b
Natchez, MS · <1 mi
391208b
Natchez, MS · 4 mi
391228b
Natchez, MS · 6 mi
391908b
Washington, MS · 10 mi
713739a
Vidalia, LA · 13 mi
713349a
Ferriday, LA · 17 mi
396339a
Crosby, MS · 19 mi
396618b
Roxie, MS · 19 mi

Mississippi planting zones →

Questions about 39165

What planting zone is ZIP code 39165?

ZIP code 39165 (Sibley, 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 Sibley, MS?

The median last spring frost (32 °F) near 39165 is March 16; after April 6 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Natchez station.

When is the first frost in Sibley, MS?

The median first fall frost near 39165 is November 9, giving a median frost-free growing season of 237 days.

When should I plant tomatoes in 39165?

Start tomato seeds indoors around Jan 19 – Feb 2 and set transplants outside around Mar 23 – Apr 6, one to three weeks after the median last frost.

How much rain and snow does 39165 get?

About 58.7 inches of precipitation a year (NOAA 1991–2020 normals, Vidalia #2 station).

How hot do summers get in Sibley, MS?

The average high peaks at 90 °F in July, with about 67 days a year at 90 °F or more.

What kind of soil does 39165 have?

The USDA soil survey maps Natchez at the center of ZIP 39165: silt loam, well drained, pH about 6.2 (slightly acidic).

Did spring come early in Sibley, MS in 2026?

Spring leaf-out near 39165 came on Jan 21 in 2026, 10 days earlier than the 1991–2020 average (Jan 31), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Sibley, MS?

Short-day onions: the longest day near 39165 is 14 h 12 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.