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

Planting zone for 12046 — Coeymans Hollow, NY

ZIP code 12046 (Coeymans Hollow, Albany County) is in USDA zone 5b: the coldest winter night averages −15 to −10 °F. The median last spring frost is May 3 and the first fall frost October 12.

Where ZIP 12046 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.

Zone5b−15 to −10 °F
Coldest night−26.1 to −23.3 °C
Last frostMay 3
First frostOct 12
2012 zone5b

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 5b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Coeymans Hollow, NY…

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 Coeymans Hollow, NY

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 3median — 50% chance of a later frost
Safe for tender plantsMay 18only 10% chance of frost after
First fall frostOctober 12median — 10% chance by Oct 1
Growing season160 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 21 and returns around October 25.

From the NOAA station Alcove Dam, NY — 2 miles away, elevation 607 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 12046

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 22 – Apr 5
SpinachSow outdoors · Mar 22 – Apr 12
Broccoli, cabbageStart indoors · Feb 22 – Mar 8
Broccoli, cabbageTransplant · Apr 12 – Apr 26
Onion setsPlant outdoors · Apr 5 – Apr 19
PotatoesPlant outdoors · Apr 12 – Apr 26
LettuceSow outdoors · Apr 5 – Apr 19
Carrots, beetsSow outdoors · Apr 12 – Apr 26
TomatoesStart indoors · Mar 8 – Mar 22
TomatoesTransplant · May 10 – May 24
Peppers, eggplantStart indoors · Feb 22 – Mar 8
Peppers, eggplantTransplant · May 17 – May 31
BeansSow outdoors · May 10 – May 24
Sweet cornSow outdoors · May 10 – May 24
Cucumbers, squashSow outdoors · May 10 – May 24
Fall lettuce, spinachSow outdoors · Aug 17 – Aug 31
GarlicPlant cloves · Sep 28 – Nov 2
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 3) and first fall frost (Oct 12) 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 12046 came on Apr 12 — 5 days earlier than the 1991–2020 average (Apr 17).

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 5b in New York

609 plants native to the lower 48 states, recorded in New York, and rated by the USDA to survive −15 °F or colder — the bottom of zone 5b. Each links to its USDA PLANTS profile.

Trees 75

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican beech80 ft · blooms mid spring · low shade tolerance · to −44 °FAmerican chestnut115 ft · blooms early summer · high shade tolerance · to −33 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °Farborvitae50 ft · blooms mid spring · medium shade tolerance · to −33 °F

Shrubs 120

alderleaf buckthorn3 ft · blooms late spring · low shade tolerance · to −33 °FAllegheny serviceberry35 ft · blooms early spring · low shade tolerance · to −38 °Falternateleaf dogwood25 ft · blooms mid spring · low shade tolerance · to −47 °FAmerican black currant3 ft · blooms early spring · to −46 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °FAmerican holly40 ft · blooms mid spring · low shade tolerance · to −20 °F

Wildflowers & perennials 208

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °FAmerican bur-reed3 ft · blooms indeterminate · medium shade tolerance · to −33 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °FAmerican licorice4 ft · blooms late spring · medium shade tolerance · to −38 °FAmerican lotus3 ft · blooms mid summer · high shade tolerance · to −36 °FAmerican pokeweed7 ft · blooms mid summer · low shade tolerance · to −33 °F

Grasses 185

alkali sacaton3 ft · blooms mid summer · high shade tolerance · to −38 °FAmerican beachgrass2.5 ft · blooms spring · high shade tolerance · to −28 °Farctic brome3 ft · blooms early summer · low shade tolerance · to −33 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °FBailey's sedge2.1 ft · blooms late spring · low shade tolerance · to −33 °Fbeaked sedge4 ft · blooms late spring · low shade tolerance · to −38 °F

Vines 7

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Ffrost grape83 ft · blooms late spring · medium shade tolerance · to −23 °Friverbank grape45 ft · blooms late spring · medium shade tolerance · to −33 °Fsummer grape30 ft · blooms late spring · low shade tolerance · to −23 °Ftrumpet honeysuckle16 ft · blooms late summer · low shade tolerance · to −33 °F

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 Coeymans Hollow, NY.

Soil in Coeymans Hollow, NY

The soil mapped at the center of ZIP 12046 is Arnot — moderately decomposed plant material, somewhat excessively drained.

TextureModerately decomposed plant materialtop layer
pH4.8strongly acidic; most vegetables like 6.0–7.0
DrainageSomewhat excessively drainednatural drainage class
Organic matter80%high
Hydrologic groupDwater soaks in very slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Arnot-Rock outcrop complex, 0 to 8 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 12046; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Coeymans Hollow, NY

Summer high80 °Faverage high, July
Winter low13 °Faverage low, January
Hot days4days a year at 90 °F or more
Freezing nights156nights a year at 32 °F or less
Growing degree days2,281base 50 °F — the season’s usable heat
Longest day15 h 18 mindaylight on June 21
Shortest day9 h 03 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation42.5 inper year, rain and melted snow
Snowfall46 inper year

Average high and low, by month

0°10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 32 °F, low 13 °F 32°13° JanFebruary: average high 34 °F, low 13 °F 34°13° FebMarch: average high 43 °F, low 22 °F 43°22° MarApril: average high 56 °F, low 34 °F 56°34° AprMay: average high 68 °F, low 45 °F 68°45° MayJune: average high 75 °F, low 54 °F 75°54° JunJuly: average high 80 °F, low 59 °F 80°59° JulAugust: average high 78 °F, low 58 °F 78°58° AugSeptember: average high 71 °F, low 50 °F 71°50° SepOctober: average high 59 °F, low 39 °F 59°39° OctNovember: average high 47 °F, low 29 °F 47°29° NovDecember: average high 37 °F, low 21 °F 37°21° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 2.63 in precipitation, 11.4 in snowfall 2.6❄11 JanFebruary: 2.22 in precipitation, 11.6 in snowfall 2.2❄12 FebMarch: 3.28 in precipitation, 9.8 in snowfall 3.3❄10 MarApril: 3.56 in precipitation, 0.8 in snowfall 3.6❄1 AprMay: 3.34 in precipitation 3.3 MayJune: 4.32 in precipitation 4.3 JunJuly: 3.93 in precipitation 3.9 JulAugust: 4.42 in precipitation 4.4 AugSeptember: 3.88 in precipitation 3.9 SepOctober: 4.63 in precipitation, 0.1 in snowfall 4.6 OctNovember: 2.87 in precipitation, 0.6 in snowfall 2.9❄1 NovDecember: 3.45 in precipitation, 11.4 in snowfall 3.5❄11 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Alcove Dam, NY (2 mi away); precipitation: Alcove Dam, NY (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

120075b
Alcove, NY · <1 mi
120676a
Feura Bush, NY · 3 mi
120415b
Clarksville, NY · 4 mi
121436a
Ravena, NY · 4 mi
121616a
South Bethlehem, NY · 4 mi
120875b
Hannacroix, NY · 5 mi
121586a
Selkirk, NY · 6 mi
120456a
Coeymans, NY · 6 mi

New York planting zones →

Questions about 12046

What planting zone is ZIP code 12046?

ZIP code 12046 (Coeymans Hollow, NY) is in USDA hardiness zone 5b on the 2023 map: the coldest night of an average winter reaches −15 to −10 °F (−26.1 to −23.3 °C).

When is the last frost in Coeymans Hollow, NY?

The median last spring frost (32 °F) near 12046 is May 3; after May 18 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Alcove Dam station.

When is the first frost in Coeymans Hollow, NY?

The median first fall frost near 12046 is October 12, giving a median frost-free growing season of 160 days.

When should I plant tomatoes in 12046?

Start tomato seeds indoors around Mar 8 – Mar 22 and set transplants outside around May 10 – May 24, one to three weeks after the median last frost.

How much rain and snow does 12046 get?

About 42.5 inches of precipitation a year and 46 inches of snowfall (NOAA 1991–2020 normals, Alcove Dam station).

How hot do summers get in Coeymans Hollow, NY?

The average high peaks at 80 °F in July, with about 4 days a year at 90 °F or more.

What kind of soil does 12046 have?

The USDA soil survey maps Arnot at the center of ZIP 12046: moderately decomposed plant material, somewhat excessively drained, pH about 4.8 (strongly acidic).

Did spring come early in Coeymans Hollow, NY in 2026?

Spring leaf-out near 12046 came on Apr 12 in 2026, 5 days earlier than the 1991–2020 average (Apr 17), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Coeymans Hollow, NY?

Long-day onions: the longest day near 12046 is 15 h 18 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).