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

Planting zone for 30348 — Atlanta, GA

ZIP code 30348 (Atlanta, Fulton County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 24 and the first fall frost November 8.

Where ZIP 30348 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 24
First frostNov 8
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 Atlanta, 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 Atlanta, GA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 24median — 50% chance of a later frost
Safe for tender plantsApril 10only 10% chance of frost after
First fall frostNovember 8median — 10% chance by Oct 27
Growing season231 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 9 and returns around November 20.

From the NOAA station Atlanta Fulton Co. Airport, GA — 5 miles away, elevation 840 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 30348

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 10 – Feb 24
SpinachSow outdoors · Feb 10 – Mar 3
Broccoli, cabbageStart indoors · Jan 13 – Jan 27
Broccoli, cabbageTransplant · Mar 3 – Mar 17
Onion setsPlant outdoors · Feb 24 – Mar 10
PotatoesPlant outdoors · Mar 3 – Mar 17
LettuceSow outdoors · Feb 24 – Mar 10
Carrots, beetsSow outdoors · Mar 3 – Mar 17
TomatoesStart indoors · Jan 27 – Feb 10
TomatoesTransplant · Mar 31 – Apr 14
Peppers, eggplantStart indoors · Jan 13 – Jan 27
Peppers, eggplantTransplant · Apr 7 – Apr 21
BeansSow outdoors · Mar 31 – Apr 14
Sweet cornSow outdoors · Mar 31 – Apr 14
Cucumbers, squashSow outdoors · Mar 31 – Apr 14
Fall lettuce, spinachSow outdoors · Sep 13 – Sep 27
GarlicPlant cloves · Oct 25 – Nov 29
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 24) and first fall frost (Nov 8) 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 30348 came on Feb 14 — 3 days later than the 1991–2020 average (Feb 11).

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 Atlanta, GA

The soil mapped at the center of ZIP 30348 is Wateree — sandy loam, well drained.

TextureSandy loamdrains and warms fast; dries out and needs more feeding
pH5.3strongly 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: Wateree-Rion complex, 10 to 25 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 30348; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Atlanta, GA

Summer high90 °Faverage high, July
Winter low34 °Faverage low, January
Hot days54days a year at 90 °F or more
Freezing nights52nights a year at 32 °F or less
Growing degree days5,219base 50 °F — the season’s usable heat
Longest day14 h 24 mindaylight on June 21
Shortest day9 h 54 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation54.1 inper year, rain and melted snow
Snowfall1 inper year

Average high and low, by month

20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 54 °F, low 34 °F 54°34° JanFebruary: average high 58 °F, low 37 °F 58°37° FebMarch: average high 66 °F, low 43 °F 66°43° MarApril: average high 74 °F, low 50 °F 74°50° AprMay: average high 81 °F, low 58 °F 81°58° MayJune: average high 87 °F, low 67 °F 87°67° JunJuly: average high 90 °F, low 70 °F 90°70° JulAugust: average high 89 °F, low 69 °F 89°69° AugSeptember: average high 84 °F, low 63 °F 84°63° SepOctober: average high 75 °F, low 51 °F 75°51° OctNovember: average high 64 °F, low 41 °F 64°41° NovDecember: average high 56 °F, low 36 °F 56°36° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″6″January: 4.75 in precipitation, 0.2 in snowfall 4.8 JanFebruary: 4.88 in precipitation, 0.2 in snowfall 4.9 FebMarch: 5.02 in precipitation, 0.1 in snowfall 5.0 MarApril: 3.84 in precipitation 3.8 AprMay: 3.98 in precipitation 4.0 MayJune: 4.96 in precipitation 5.0 JunJuly: 5.53 in precipitation 5.5 JulAugust: 4.71 in precipitation 4.7 AugSeptember: 3.73 in precipitation 3.7 SepOctober: 3.39 in precipitation 3.4 OctNovember: 4.49 in precipitation 4.5 NovDecember: 4.83 in precipitation 4.8 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Atlanta Fulton Co. Airport, GA (5 mi away); precipitation: Atlanta 9nw, GA (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

303018a
Atlanta, GA · <1 mi
303258a
Atlanta, GA · <1 mi
303558a
Atlanta, GA · <1 mi
303578a
Atlanta, GA · <1 mi
303618a
Atlanta, GA · <1 mi
303648b
Atlanta, GA · <1 mi
303688b
Atlanta, GA · <1 mi
303698a
Atlanta, GA · <1 mi

All 89 ZIP codes in Atlanta → · Georgia planting zones →

Questions about 30348

What planting zone is ZIP code 30348?

ZIP code 30348 (Atlanta, 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 Atlanta, GA?

The median last spring frost (32 °F) near 30348 is March 24; after April 10 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Atlanta Fulton Co. Airport station.

When is the first frost in Atlanta, GA?

The median first fall frost near 30348 is November 8, giving a median frost-free growing season of 231 days.

When should I plant tomatoes in 30348?

Start tomato seeds indoors around Jan 27 – Feb 10 and set transplants outside around Mar 31 – Apr 14, one to three weeks after the median last frost.

How much rain and snow does 30348 get?

About 54.1 inches of precipitation a year and 1 inches of snowfall (NOAA 1991–2020 normals, Atlanta 9nw station).

How hot do summers get in Atlanta, GA?

The average high peaks at 90 °F in July, with about 54 days a year at 90 °F or more.

What kind of soil does 30348 have?

The USDA soil survey maps Wateree at the center of ZIP 30348: sandy loam, well drained, pH about 5.3 (strongly acidic).

Did spring come early in Atlanta, GA in 2026?

Spring leaf-out near 30348 came on Feb 14 in 2026, 3 days later than the 1991–2020 average (Feb 11), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Atlanta, GA?

Intermediate onions: the longest day near 30348 is 14 h 24 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 30348 change?

Yes. The 2012 USDA map put 30348 in zone 8a; the 2023 map puts it in zone 8b. The newer map uses 1991–2020 data and more weather stations.