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

Planting zone for 36792 — Randolph, AL

ZIP code 36792 (Randolph, Bibb County) is in USDA zone 8a: the coldest winter night averages 10 to 15 °F. The median last spring frost is March 21 and the first fall frost November 11.

Where ZIP 36792 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 21
First frostNov 11
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 Randolph, AL…

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 Randolph, AL

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 21median — 50% chance of a later frost
Safe for tender plantsApril 10only 10% chance of frost after
First fall frostNovember 11median — 10% chance by Oct 29
Growing season235 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 7 and returns around November 25.

From the NOAA station Thorsby Exp Stn, AL — 14 miles away, elevation 679 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 36792

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 7 – Feb 21
SpinachSow outdoors · Feb 7 – Feb 28
Broccoli, cabbageStart indoors · Jan 10 – Jan 24
Broccoli, cabbageTransplant · Feb 28 – Mar 14
Onion setsPlant outdoors · Feb 21 – Mar 7
PotatoesPlant outdoors · Feb 28 – Mar 14
LettuceSow outdoors · Feb 21 – Mar 7
Carrots, beetsSow outdoors · Feb 28 – Mar 14
TomatoesStart indoors · Jan 24 – Feb 7
TomatoesTransplant · Mar 28 – Apr 11
Peppers, eggplantStart indoors · Jan 10 – Jan 24
Peppers, eggplantTransplant · Apr 4 – Apr 18
BeansSow outdoors · Mar 28 – Apr 11
Sweet cornSow outdoors · Mar 28 – Apr 11
Cucumbers, squashSow outdoors · Mar 28 – Apr 11
Fall lettuce, spinachSow outdoors · Sep 16 – Sep 30
GarlicPlant cloves · Oct 28 – Dec 2
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 21) and first fall frost (Nov 11) 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 36792 came on Feb 13 — 5 days later than the 1991–2020 average (Feb 8).

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 Randolph, AL

The soil mapped at the center of ZIP 36792 is Luverne — sandy loam, well drained.

TextureSandy loamdrains and warms fast; dries out and needs more feeding
pH4.6strongly 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: Luverne-Smithdale complex, 15 to 35 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 36792; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Randolph, AL

Summer high90 °Faverage high, July
Winter low33 °Faverage low, January
Hot days56days a year at 90 °F or more
Freezing nights46nights a year at 32 °F or less
Growing degree days5,289base 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
Precipitation59.9 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 55 °F, low 33 °F 55°33° JanFebruary: average high 59 °F, low 36 °F 59°36° FebMarch: average high 67 °F, low 43 °F 67°43° MarApril: average high 74 °F, low 49 °F 74°49° AprMay: average high 82 °F, low 58 °F 82°58° MayJune: average high 87 °F, low 66 °F 87°66° JunJuly: average high 90 °F, low 69 °F 90°69° JulAugust: average high 90 °F, low 68 °F 90°68° AugSeptember: average high 85 °F, low 63 °F 85°63° SepOctober: average high 76 °F, low 51 °F 76°51° OctNovember: average high 66 °F, low 41 °F 66°41° NovDecember: average high 57 °F, low 35 °F 57°35° Dec

Precipitation by month inches

0″2″4″6″January: 5.44 in precipitation 5.4 JanFebruary: 6.14 in precipitation 6.1 FebMarch: 5.74 in precipitation 5.7 MarApril: 5.20 in precipitation 5.2 AprMay: 4.33 in precipitation 4.3 MayJune: 4.80 in precipitation 4.8 JunJuly: 5.46 in precipitation 5.5 JulAugust: 4.13 in precipitation 4.1 AugSeptember: 4.46 in precipitation 4.5 SepOctober: 3.52 in precipitation 3.5 OctNovember: 4.93 in precipitation 4.9 NovDecember: 5.72 in precipitation 5.7 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Thorsby Exp Stn, AL (14 mi away); precipitation: Montevallo, AL (13 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

367938a
Lawley, AL · 8 mi
350358a
Brierfield, AL · 9 mi
367508b
Maplesville, AL · 10 mi
351718a
Thorsby, AL · 10 mi
350858b
Jemison, AL · 11 mi
351878a
Wilton, AL · 11 mi
350428a
Centreville, AL · 12 mi
367908b
Stanton, AL · 13 mi

Alabama planting zones →

Questions about 36792

What planting zone is ZIP code 36792?

ZIP code 36792 (Randolph, AL) 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 Randolph, AL?

The median last spring frost (32 °F) near 36792 is March 21; after April 10 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Thorsby Exp Stn station.

When is the first frost in Randolph, AL?

The median first fall frost near 36792 is November 11, giving a median frost-free growing season of 235 days.

When should I plant tomatoes in 36792?

Start tomato seeds indoors around Jan 24 – Feb 7 and set transplants outside around Mar 28 – Apr 11, one to three weeks after the median last frost.

How much rain and snow does 36792 get?

About 59.9 inches of precipitation a year (NOAA 1991–2020 normals, Montevallo station).

How hot do summers get in Randolph, AL?

The average high peaks at 90 °F in July, with about 56 days a year at 90 °F or more.

What kind of soil does 36792 have?

The USDA soil survey maps Luverne at the center of ZIP 36792: sandy loam, well drained, pH about 4.6 (strongly acidic).

Did spring come early in Randolph, AL in 2026?

Spring leaf-out near 36792 came on Feb 13 in 2026, 5 days later than the 1991–2020 average (Feb 8), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Randolph, AL?

Intermediate onions: the longest day near 36792 is 14 h 19 min, so day-neutral types bulb best; long-day varieties may not bulb fully.