Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 29, 2026

Planting zone for 31823 — Pine Mountain Valley, GA

ZIP code 31823 (Pine Mountain Valley, Harris County) is in USDA zone 8a: the coldest winter night averages 10 to 15 °F. The median last spring frost is April 1 and the first fall frost November 3.

Where ZIP 31823 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 frostApr 1

First frostNov 3

2012 zone8a

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 8a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Pine Mountain Valley, 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 Pine Mountain Valley, GA

JanFebMarAprMayJunJulAugSepOctNovDec

Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free

Last spring frostApril 1median — 50% chance of a later frost

Safe for tender plantsApril 16only 10% chance of frost after

First fall frostNovember 3median — 10% chance by Oct 22

Growing season216 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 17 and returns around November 15.

From the NOAA station Talbotton, GA — 19 miles away, elevation 620 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 31823

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 18 – Mar 4

SpinachSow outdoors · Feb 18 – Mar 11

Broccoli, cabbageStart indoors · Jan 21 – Feb 4

Broccoli, cabbageTransplant · Mar 11 – Mar 25

Onion setsPlant outdoors · Mar 4 – Mar 18

PotatoesPlant outdoors · Mar 11 – Mar 25

LettuceSow outdoors · Mar 4 – Mar 18

Carrots, beetsSow outdoors · Mar 11 – Mar 25

TomatoesStart indoors · Feb 4 – Feb 18

TomatoesTransplant · Apr 8 – Apr 22

Peppers, eggplantStart indoors · Jan 21 – Feb 4

Peppers, eggplantTransplant · Apr 15 – Apr 29

BeansSow outdoors · Apr 8 – Apr 22

Sweet cornSow outdoors · Apr 8 – Apr 22

Cucumbers, squashSow outdoors · Apr 8 – Apr 22

Fall lettuce, spinachSow outdoors · Sep 8 – Sep 22

GarlicPlant cloves · Oct 20 – Nov 24

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 1) and first fall frost (Nov 3) 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 31823 came on Feb 14 — 7 days later than the 1991–2020 average (Feb 7).

average
Feb 72026
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).

Native plants for zone 8a in Georgia

572 plants native to the lower 48 states, recorded in Georgia, and rated by the USDA to survive 10 °F or colder — the bottom of zone 8a. Each links to its USDA PLANTS profile.

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 Pine Mountain Valley, GA.

Soil in Pine Mountain Valley, GA

The soil mapped at the center of ZIP 31823 is Pacolet — sandy loam, well drained.

TextureSandy loamdrains and warms fast; dries out and needs more feeding

pH5.5moderately acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter0.75%low — add compost

Hydrologic groupBwater soaks in moderately

Farmland classNot prime farmlandUSDA classification

Map unit: Pacolet sandy loam, 10 to 15 percent slopes, moderately 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 31823; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Pine Mountain Valley, GA

Summer high89 °Faverage high, July

Winter low32 °Faverage low, January

Hot days47days a year at 90 °F or more

Freezing nights54nights a year at 32 °F or less

Growing degree days4,940base 50 °F — the season’s usable heat

Longest day14 h 19 mindaylight on June 21

Shortest day9 h 59 mindaylight on December 21

Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully

Precipitation52.4 inper year, rain and melted snow

Average high and low, by month

Precipitation by month inches

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Talbotton, GA (19 mi away); precipitation: La Grange 10.6 Ese, GA (12 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

318268a

Shiloh, GA · 6 mi

318228a

Pine Mountain, GA · 7 mi

318118b

Hamilton, GA · 8 mi

318308a

Warm Springs, GA · 9 mi

318048b

Cataula, GA · 10 mi

318078b

Ellerslie, GA · 11 mi

318318b

Waverly Hall, GA · 11 mi

318168a

Manchester, GA · 13 mi

Georgia planting zones →

Questions about 31823

What planting zone is ZIP code 31823?

ZIP code 31823 (Pine Mountain Valley, 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 Pine Mountain Valley, GA?

The median last spring frost (32 °F) near 31823 is April 1; after April 16 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Talbotton station.

When is the first frost in Pine Mountain Valley, GA?

The median first fall frost near 31823 is November 3, giving a median frost-free growing season of 216 days.

When should I plant tomatoes in 31823?

Start tomato seeds indoors around Feb 4 – Feb 18 and set transplants outside around Apr 8 – Apr 22, one to three weeks after the median last frost.

How much rain and snow does 31823 get?

About 52.4 inches of precipitation a year (NOAA 1991–2020 normals, La Grange 10.6 Ese station).

How hot do summers get in Pine Mountain Valley, GA?

The average high peaks at 89 °F in July, with about 47 days a year at 90 °F or more.

What kind of soil does 31823 have?

The USDA soil survey maps Pacolet at the center of ZIP 31823: sandy loam, well drained, pH about 5.5 (moderately acidic).

Did spring come early in Pine Mountain Valley, GA in 2026?

Spring leaf-out near 31823 came on Feb 14 in 2026, 7 days later than the 1991–2020 average (Feb 7), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Pine Mountain Valley, GA?

Intermediate onions: the longest day near 31823 is 14 h 19 min, so day-neutral types bulb best; long-day varieties may not bulb fully.