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

Planting zone for 31999 — Columbus, GA

ZIP code 31999 (Columbus, Muscogee County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 5 and the first fall frost November 23.

Where ZIP 31999 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 5
First frostNov 23
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 Columbus, GA…

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 Columbus, GA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 5median — 50% chance of a later frost
Safe for tender plantsMarch 24only 10% chance of frost after
First fall frostNovember 23median — 10% chance by Nov 7
Growing season265 daysfrost-free, median

A hard freeze (28 °F) usually ends around February 21 and returns around December 12.

From the NOAA station Columbus Metro Airport, GA — 4 miles away, elevation 394 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 31999

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Jan 22 – Feb 5
SpinachSow outdoors · Jan 22 – Feb 12
Broccoli, cabbageStart indoors · Dec 25 – Jan 8
Broccoli, cabbageTransplant · Feb 12 – Feb 26
Onion setsPlant outdoors · Feb 5 – Feb 19
PotatoesPlant outdoors · Feb 12 – Feb 26
LettuceSow outdoors · Feb 5 – Feb 19
Carrots, beetsSow outdoors · Feb 12 – Feb 26
TomatoesStart indoors · Jan 8 – Jan 22
TomatoesTransplant · Mar 12 – Mar 26
Peppers, eggplantStart indoors · Dec 25 – Jan 8
Peppers, eggplantTransplant · Mar 19 – Apr 2
BeansSow outdoors · Mar 12 – Mar 26
Sweet cornSow outdoors · Mar 12 – Mar 26
Cucumbers, squashSow outdoors · Mar 12 – Mar 26
Fall lettuce, spinachSow outdoors · Sep 28 – Oct 12
GarlicPlant cloves · Nov 9 – Dec 14
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 5) and first fall frost (Nov 23) 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 31999 came on Feb 10 — 7 days later than the 1991–2020 average (Feb 3).

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 Georgia

590 plants native to the lower 48 states, recorded in Georgia, and rated by the USDA to survive 15 °F or colder — the bottom of zone 8b. Each links to its USDA PLANTS profile.

Trees 89

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 143

Allegheny serviceberry35 ft · blooms early spring · low shade tolerance · to −38 °Faloe 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 °F

Wildflowers & perennials 174

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 159

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 °Fbeaked spikerush3 ft · blooms late spring · high shade tolerance · to −28 °Fbig bluestem6 ft · blooms summer · high shade tolerance · to −46 °Fbig cordgrass8 ft · blooms spring · high shade tolerance · to −3 °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 Columbus, GA.

Soil in Columbus, GA

The center of ZIP 31999 is mapped as Urban land: built-over ground without natural soil data. Garden soil here is usually imported or disturbed — test before you plant.

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 31999; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Columbus, GA

Summer high93 °Faverage high, July
Winter low38 °Faverage low, January
Hot days81days a year at 90 °F or more
Freezing nights28nights a year at 32 °F or less
Growing degree days6,420base 50 °F — the season’s usable heat
Longest day14 h 17 mindaylight on June 21
Shortest day10 h 01 mindaylight on December 21
Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb
Precipitation54.4 inper year, rain and melted snow

Average high and low, by month

30°40°50°60°70°80°90°100°32 °FJanuary: average high 59 °F, low 38 °F 59°38° JanFebruary: average high 63 °F, low 42 °F 63°42° FebMarch: average high 70 °F, low 47 °F 70°47° MarApril: average high 78 °F, low 54 °F 78°54° AprMay: average high 85 °F, low 63 °F 85°63° MayJune: average high 90 °F, low 71 °F 90°71° JunJuly: average high 93 °F, low 74 °F 93°74° JulAugust: average high 92 °F, low 73 °F 92°73° AugSeptember: average high 87 °F, low 68 °F 87°68° SepOctober: average high 78 °F, low 57 °F 78°57° OctNovember: average high 68 °F, low 46 °F 68°46° NovDecember: average high 61 °F, low 41 °F 61°41° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 4.90 in precipitation 4.9 JanFebruary: 4.90 in precipitation 4.9 FebMarch: 5.85 in precipitation 5.8 MarApril: 4.89 in precipitation 4.9 AprMay: 3.56 in precipitation 3.6 MayJune: 4.51 in precipitation 4.5 JunJuly: 5.37 in precipitation 5.4 JulAugust: 4.25 in precipitation 4.3 AugSeptember: 3.46 in precipitation 3.5 SepOctober: 3.25 in precipitation 3.3 OctNovember: 4.16 in precipitation 4.2 NovDecember: 5.31 in precipitation 5.3 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Columbus Metro Airport, GA (4 mi away); precipitation: Phenix City 2.2 Nnw, AL (3 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8b.

319018b
Columbus, GA · <1 mi
319938b
Columbus, GA · 2 mi
368688b
Phenix City, AL · 2 mi
319068b
Columbus, GA · 2 mi
319958b
Fort Benning, GA · 3 mi
368678b
Phenix City, AL · 3 mi
319038b
Columbus, GA · 4 mi
319028b
Columbus, GA · 5 mi

All 14 ZIP codes in Columbus → · Georgia planting zones →

Questions about 31999

What planting zone is ZIP code 31999?

ZIP code 31999 (Columbus, GA) 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 Columbus, GA?

The median last spring frost (32 °F) near 31999 is March 5; after March 24 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Columbus Metro Airport station.

When is the first frost in Columbus, GA?

The median first fall frost near 31999 is November 23, giving a median frost-free growing season of 265 days.

When should I plant tomatoes in 31999?

Start tomato seeds indoors around Jan 8 – Jan 22 and set transplants outside around Mar 12 – Mar 26, one to three weeks after the median last frost.

How much rain and snow does 31999 get?

About 54.4 inches of precipitation a year (NOAA 1991–2020 normals, Phenix City 2.2 Nnw station).

How hot do summers get in Columbus, GA?

The average high peaks at 93 °F in July, with about 81 days a year at 90 °F or more.

Did spring come early in Columbus, GA in 2026?

Spring leaf-out near 31999 came on Feb 10 in 2026, 7 days later than the 1991–2020 average (Feb 3), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Columbus, GA?

Short-day onions: the longest day near 31999 is 14 h 17 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.