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

Planting zone for 30108 — Bowdon, GA

ZIP code 30108 (Bowdon, Carroll County) is in USDA zone 8a: the coldest winter night averages 10 to 15 °F. The median last spring frost is March 28 and the first fall frost November 5.

Where ZIP 30108 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.

Zone8a10 to 15 °F
Coldest night−12.2 to −9.4 °C
Last frostMar 28
First frostNov 5
2012 zone7b

Was 7b 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 8a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Bowdon, 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 Bowdon, GA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 28median — 50% chance of a later frost
Safe for tender plantsApril 12only 10% chance of frost after
First fall frostNovember 5median — 10% chance by Oct 23
Growing season222 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 15 and returns around November 16.

From the NOAA station Carrollton, GA — 11 miles away, elevation 994 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 30108

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 14 – Feb 28
SpinachSow outdoors · Feb 14 – Mar 7
Broccoli, cabbageStart indoors · Jan 17 – Jan 31
Broccoli, cabbageTransplant · Mar 7 – Mar 21
Onion setsPlant outdoors · Feb 28 – Mar 14
PotatoesPlant outdoors · Mar 7 – Mar 21
LettuceSow outdoors · Feb 28 – Mar 14
Carrots, beetsSow outdoors · Mar 7 – Mar 21
TomatoesStart indoors · Jan 31 – Feb 14
TomatoesTransplant · Apr 4 – Apr 18
Peppers, eggplantStart indoors · Jan 17 – Jan 31
Peppers, eggplantTransplant · Apr 11 – Apr 25
BeansSow outdoors · Apr 4 – Apr 18
Sweet cornSow outdoors · Apr 4 – Apr 18
Cucumbers, squashSow outdoors · Apr 4 – Apr 18
Fall lettuce, spinachSow outdoors · Sep 10 – Sep 24
GarlicPlant cloves · Oct 22 – Nov 26
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 28) and first fall frost (Nov 5) 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 30108 came on Feb 17 — 3 days later than the 1991–2020 average (Feb 14).

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 Bowdon, GA

The soil mapped at the center of ZIP 30108 is Hulett — sandy clay loam, well drained.

TextureSandy clay loamholds water and nutrients; slow to drain and warm up
pH5.3strongly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter0.75%low — add compost
Hydrologic groupCwater soaks in slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Hulett gravelly sandy clay loam, 6 to 15 percent slopes, severely eroded.

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 30108; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Bowdon, GA

Summer high90 °Faverage high, July
Winter low32 °Faverage low, January
Hot days36days a year at 90 °F or more
Freezing nights65nights a year at 32 °F or less
Growing degree days4,974base 50 °F — the season’s usable heat
Longest day14 h 23 mindaylight on June 21
Shortest day9 h 55 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation55.2 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 54 °F, low 32 °F 54°32° JanFebruary: average high 58 °F, low 35 °F 58°35° FebMarch: average high 66 °F, low 41 °F 66°41° MarApril: average high 74 °F, low 48 °F 74°48° AprMay: average high 81 °F, low 57 °F 81°57° MayJune: average high 87 °F, low 65 °F 87°65° JunJuly: average high 90 °F, low 69 °F 90°69° JulAugust: average high 88 °F, low 68 °F 88°68° AugSeptember: average high 83 °F, low 62 °F 83°62° SepOctober: average high 74 °F, low 50 °F 74°50° OctNovember: average high 64 °F, low 39 °F 64°39° NovDecember: average high 56 °F, low 34 °F 56°34° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 4.95 in precipitation 5.0 JanFebruary: 5.23 in precipitation 5.2 FebMarch: 5.34 in precipitation 5.3 MarApril: 4.51 in precipitation 4.5 AprMay: 4.39 in precipitation 4.4 MayJune: 4.51 in precipitation 4.5 JunJuly: 4.84 in precipitation 4.8 JulAugust: 4.42 in precipitation 4.4 AugSeptember: 4.12 in precipitation 4.1 SepOctober: 3.42 in precipitation 3.4 OctNovember: 4.31 in precipitation 4.3 NovDecember: 5.15 in precipitation 5.2 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Carrollton, GA (11 mi away); precipitation: Carrollton 3.2 Sw, GA (8 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8a.

362738a
Ranburne, AL · 7 mi
362638a
Graham, AL · 7 mi
301178a
Carrollton, GA · 8 mi
301828a
Waco, GA · 9 mi
301708a
Roopville, GA · 9 mi
301508a
Mount Zion, GA · 9 mi
301188a
Carrollton, GA · 10 mi
301128a
Carrollton, GA · 11 mi

Georgia planting zones →

Questions about 30108

What planting zone is ZIP code 30108?

ZIP code 30108 (Bowdon, GA) is in USDA hardiness zone 8a on the 2023 map: the coldest night of an average winter reaches 10 to 15 °F (−12.2 to −9.4 °C).

When is the last frost in Bowdon, GA?

The median last spring frost (32 °F) near 30108 is March 28; after April 12 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Carrollton station.

When is the first frost in Bowdon, GA?

The median first fall frost near 30108 is November 5, giving a median frost-free growing season of 222 days.

When should I plant tomatoes in 30108?

Start tomato seeds indoors around Jan 31 – Feb 14 and set transplants outside around Apr 4 – Apr 18, one to three weeks after the median last frost.

How much rain and snow does 30108 get?

About 55.2 inches of precipitation a year (NOAA 1991–2020 normals, Carrollton 3.2 Sw station).

How hot do summers get in Bowdon, GA?

The average high peaks at 90 °F in July, with about 36 days a year at 90 °F or more.

What kind of soil does 30108 have?

The USDA soil survey maps Hulett at the center of ZIP 30108: sandy clay loam, well drained, pH about 5.3 (strongly acidic).

Did spring come early in Bowdon, GA in 2026?

Spring leaf-out near 30108 came on Feb 17 in 2026, 3 days later than the 1991–2020 average (Feb 14), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Bowdon, GA?

Intermediate onions: the longest day near 30108 is 14 h 23 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 30108 change?

Yes. The 2012 USDA map put 30108 in zone 7b; the 2023 map puts it in zone 8a. The newer map uses 1991–2020 data and more weather stations.