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

Planting zone for 35577 — Natural Bridge, AL

ZIP code 35577 (Natural Bridge, Winston County) is in USDA zone 7b: the coldest winter night averages 5 to 10 °F. The median last spring frost is March 29 and the first fall frost November 9.

Where ZIP 35577 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.

Zone7b5 to 10 °F
Coldest night−15 to −12.2 °C
Last frostMar 29
First frostNov 9
2012 zone7b

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 7b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Natural Bridge, 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 Natural Bridge, AL

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 29median — 50% chance of a later frost
Safe for tender plantsApril 16only 10% chance of frost after
First fall frostNovember 9median — 10% chance by Oct 25
Growing season228 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 14 and returns around November 21.

From the NOAA station Haleyville, AL — 10 miles away, elevation 919 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 35577

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 15 – Mar 1
SpinachSow outdoors · Feb 15 – Mar 8
Broccoli, cabbageStart indoors · Jan 18 – Feb 1
Broccoli, cabbageTransplant · Mar 8 – Mar 22
Onion setsPlant outdoors · Mar 1 – Mar 15
PotatoesPlant outdoors · Mar 8 – Mar 22
LettuceSow outdoors · Mar 1 – Mar 15
Carrots, beetsSow outdoors · Mar 8 – Mar 22
TomatoesStart indoors · Feb 1 – Feb 15
TomatoesTransplant · Apr 5 – Apr 19
Peppers, eggplantStart indoors · Jan 18 – Feb 1
Peppers, eggplantTransplant · Apr 12 – Apr 26
BeansSow outdoors · Apr 5 – Apr 19
Sweet cornSow outdoors · Apr 5 – Apr 19
Cucumbers, squashSow outdoors · Apr 5 – Apr 19
Fall lettuce, spinachSow outdoors · Sep 14 – Sep 28
GarlicPlant cloves · Oct 26 – Nov 30
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 29) and first fall frost (Nov 9) 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 35577 came on Feb 17 — about the same time as the 1991–2020 average (Feb 15).

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 Natural Bridge, AL

The soil mapped at the center of ZIP 35577 is Sipsey — loamy sand, well drained.

TextureLoamy sanddrains and warms fast; dries out and needs more feeding
pH5.5moderately acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter1.25%low — add compost
Hydrologic groupAwater soaks in fast
Farmland classNot prime farmlandUSDA classification

Map unit: Sipsey-Bankhead complex, 15 to 45 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 35577; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Natural Bridge, AL

Summer high89 °Faverage high, July
Winter low33 °Faverage low, January
Hot days47days a year at 90 °F or more
Freezing nights57nights a year at 32 °F or less
Growing degree days5,133base 50 °F — the season’s usable heat
Longest day14 h 26 mindaylight on June 21
Shortest day9 h 53 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation66.1 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 51 °F, low 33 °F 51°33° JanFebruary: average high 56 °F, low 37 °F 56°37° FebMarch: average high 65 °F, low 43 °F 65°43° MarApril: average high 73 °F, low 50 °F 73°50° AprMay: average high 79 °F, low 59 °F 79°59° MayJune: average high 86 °F, low 66 °F 86°66° JunJuly: average high 89 °F, low 69 °F 89°69° JulAugust: average high 89 °F, low 69 °F 89°69° AugSeptember: average high 84 °F, low 63 °F 84°63° SepOctober: average high 74 °F, low 52 °F 74°52° OctNovember: average high 62 °F, low 42 °F 62°42° NovDecember: average high 53 °F, low 36 °F 53°36° Dec

Precipitation by month inches · ❄ = snowfall

0″2″4″6″January: 5.90 in precipitation, 0.3 in snowfall 5.9 JanFebruary: 6.20 in precipitation, 0.1 in snowfall 6.2 FebMarch: 5.65 in precipitation, 0.3 in snowfall 5.7 MarApril: 5.92 in precipitation 5.9 AprMay: 5.62 in precipitation 5.6 MayJune: 5.57 in precipitation 5.6 JunJuly: 5.42 in precipitation 5.4 JulAugust: 4.99 in precipitation 5.0 AugSeptember: 4.38 in precipitation 4.4 SepOctober: 4.61 in precipitation 4.6 OctNovember: 5.06 in precipitation 5.1 NovDecember: 6.78 in precipitation, 0.2 in snowfall 6.8 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Haleyville, AL (10 mi away); precipitation: Haleyville, AL (10 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.

355757b
Lynn, AL · 4 mi
355518a
Delmar, AL · 5 mi
355487b
Brilliant, AL · 9 mi
355657b
Haleyville, AL · 10 mi
355788a
Nauvoo, AL · 11 mi
355437b
Bear Creek, AL · 12 mi
355537b
Double Springs, AL · 13 mi
355738a
Kansas, AL · 13 mi

Alabama planting zones →

Questions about 35577

What planting zone is ZIP code 35577?

ZIP code 35577 (Natural Bridge, AL) is in USDA hardiness zone 7b on the 2023 map: the coldest night of an average winter reaches 5 to 10 °F (−15 to −12.2 °C).

When is the last frost in Natural Bridge, AL?

The median last spring frost (32 °F) near 35577 is March 29; after April 16 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Haleyville station.

When is the first frost in Natural Bridge, AL?

The median first fall frost near 35577 is November 9, giving a median frost-free growing season of 228 days.

When should I plant tomatoes in 35577?

Start tomato seeds indoors around Feb 1 – Feb 15 and set transplants outside around Apr 5 – Apr 19, one to three weeks after the median last frost.

How much rain and snow does 35577 get?

About 66.1 inches of precipitation a year and 1 inches of snowfall (NOAA 1991–2020 normals, Haleyville station).

How hot do summers get in Natural Bridge, AL?

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 35577 have?

The USDA soil survey maps Sipsey at the center of ZIP 35577: loamy sand, well drained, pH about 5.5 (moderately acidic).

Did spring come early in Natural Bridge, AL in 2026?

Spring leaf-out near 35577 came on Feb 17 in 2026, about the same as the 1991–2020 average (Feb 15), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Natural Bridge, AL?

Intermediate onions: the longest day near 35577 is 14 h 26 min, so day-neutral types bulb best; long-day varieties may not bulb fully.