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

Planting zone for 31775 — Omega, GA

ZIP code 31775 (Omega, Tift County) is in USDA zone 9a: the coldest winter night averages 20 to 25 °F. The median last spring frost is March 11 and the first fall frost November 19.

Where ZIP 31775 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.

Zone9a20 to 25 °F
Coldest night−6.7 to −3.9 °C
Last frostMar 11
First frostNov 19
2012 zone8b

Was 8b 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 9a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Omega, 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 Omega, GA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 11median — 50% chance of a later frost
Safe for tender plantsMarch 29only 10% chance of frost after
First fall frostNovember 19median — 10% chance by Nov 1
Growing season254 daysfrost-free, median

A hard freeze (28 °F) usually ends around February 26 and returns around December 8.

From the NOAA station Tifton, GA — 11 miles away, elevation 381 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 31775

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Jan 28 – Feb 11
SpinachSow outdoors · Jan 28 – Feb 18
Broccoli, cabbageStart indoors · Dec 31 – Jan 14
Broccoli, cabbageTransplant · Feb 18 – Mar 4
Onion setsPlant outdoors · Feb 11 – Feb 25
PotatoesPlant outdoors · Feb 18 – Mar 4
LettuceSow outdoors · Feb 11 – Feb 25
Carrots, beetsSow outdoors · Feb 18 – Mar 4
TomatoesStart indoors · Jan 14 – Jan 28
TomatoesTransplant · Mar 18 – Apr 1
Peppers, eggplantStart indoors · Dec 31 – Jan 14
Peppers, eggplantTransplant · Mar 25 – Apr 8
BeansSow outdoors · Mar 18 – Apr 1
Sweet cornSow outdoors · Mar 18 – Apr 1
Cucumbers, squashSow outdoors · Mar 18 – Apr 1
Fall lettuce, spinachSow outdoors · Sep 24 – Oct 8
GarlicPlant cloves · Nov 5 – Dec 10
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 11) and first fall frost (Nov 19) 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 31775 came on Jan 27 — about the same time as the 1991–2020 average (Jan 29).

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).

Soil in Omega, GA

The soil mapped at the center of ZIP 31775 is Alapaha — loamy sand, poorly drained.

TextureLoamy sanddrains and warms fast; dries out and needs more feeding
pH4.7strongly acidic; most vegetables like 6.0–7.0
DrainagePoorly drainedconsider raised beds
Organic matter1.5%low — add compost
Hydrologic groupB/Dmoderate when drained; wet otherwise
Farmland classNot prime farmlandUSDA classification

Map unit: Alapaha loamy sand, 0 to 2 percent slopes, occasionally flooded.

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 31775; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Omega, GA

Summer high90 °Faverage high, July
Winter low37 °Faverage low, January
Hot days74days a year at 90 °F or more
Freezing nights30nights a year at 32 °F or less
Growing degree days5,879base 50 °F — the season’s usable heat
Longest day14 h 11 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
Precipitation48.2 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 37 °F 59°37° JanFebruary: average high 64 °F, low 40 °F 64°40° FebMarch: average high 69 °F, low 46 °F 69°46° MarApril: average high 75 °F, low 52 °F 75°52° AprMay: average high 84 °F, low 60 °F 84°60° MayJune: average high 88 °F, low 67 °F 88°67° JunJuly: average high 90 °F, low 70 °F 90°70° JulAugust: average high 89 °F, low 70 °F 89°70° AugSeptember: average high 86 °F, low 65 °F 86°65° SepOctober: average high 77 °F, low 55 °F 77°55° OctNovember: average high 68 °F, low 45 °F 68°45° NovDecember: average high 63 °F, low 40 °F 63°40° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 4.08 in precipitation 4.1 JanFebruary: 4.40 in precipitation 4.4 FebMarch: 4.77 in precipitation 4.8 MarApril: 3.28 in precipitation 3.3 AprMay: 2.67 in precipitation 2.7 MayJune: 4.95 in precipitation 5.0 JunJuly: 5.16 in precipitation 5.2 JulAugust: 4.45 in precipitation 4.5 AugSeptember: 4.28 in precipitation 4.3 SepOctober: 2.83 in precipitation 2.8 OctNovember: 3.16 in precipitation 3.2 NovDecember: 4.20 in precipitation 4.2 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Tifton, GA (11 mi away); precipitation: Tifton, GA (11 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 9a.

317719a
Norman Park, GA · 7 mi
317959a
Ty Ty, GA · 7 mi
317939a
Tifton, GA · 9 mi
316379a
Lenox, GA · 10 mi
317479a
Ellenton, GA · 11 mi
317949a
Tifton, GA · 12 mi
317899a
Sumner, GA · 13 mi
316479a
Sparks, GA · 13 mi

Georgia planting zones →

Questions about 31775

What planting zone is ZIP code 31775?

ZIP code 31775 (Omega, GA) is in USDA hardiness zone 9a on the 2023 map: the coldest night of an average winter reaches 20 to 25 °F (−6.7 to −3.9 °C).

When is the last frost in Omega, GA?

The median last spring frost (32 °F) near 31775 is March 11; after March 29 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Tifton station.

When is the first frost in Omega, GA?

The median first fall frost near 31775 is November 19, giving a median frost-free growing season of 254 days.

When should I plant tomatoes in 31775?

Start tomato seeds indoors around Jan 14 – Jan 28 and set transplants outside around Mar 18 – Apr 1, one to three weeks after the median last frost.

How much rain and snow does 31775 get?

About 48.2 inches of precipitation a year (NOAA 1991–2020 normals, Tifton station).

How hot do summers get in Omega, GA?

The average high peaks at 90 °F in July, with about 74 days a year at 90 °F or more.

What kind of soil does 31775 have?

The USDA soil survey maps Alapaha at the center of ZIP 31775: loamy sand, poorly drained, pH about 4.7 (strongly acidic).

Did spring come early in Omega, GA in 2026?

Spring leaf-out near 31775 came on Jan 27 in 2026, about the same as the 1991–2020 average (Jan 29), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Omega, GA?

Short-day onions: the longest day near 31775 is 14 h 11 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 31775 change?

Yes. The 2012 USDA map put 31775 in zone 8b; the 2023 map puts it in zone 9a. The newer map uses 1991–2020 data and more weather stations.