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

Planting zone for 12820 — Cleverdale, NY

ZIP code 12820 (Cleverdale, Warren County) is in USDA zone 5a: the coldest winter night averages −20 to −15 °F. The median last spring frost is May 9 and the first fall frost September 30.

Where ZIP 12820 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.

Zone5a−20 to −15 °F
Coldest night−28.9 to −26.1 °C
Last frostMay 9
First frostSep 30
2012 zone5a

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 5a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Cleverdale, 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 Cleverdale, NY

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 9median — 50% chance of a later frost
Safe for tender plantsMay 25only 10% chance of frost after
First fall frostSeptember 30median — 10% chance by Sep 18
Growing season143 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 28 and returns around October 9.

From the NOAA station Glens Falls Airport, NY — 7 miles away, elevation 322 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 12820

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 28 – Apr 11
SpinachSow outdoors · Mar 28 – Apr 18
Broccoli, cabbageStart indoors · Feb 28 – Mar 14
Broccoli, cabbageTransplant · Apr 18 – May 2
Onion setsPlant outdoors · Apr 11 – Apr 25
PotatoesPlant outdoors · Apr 18 – May 2
LettuceSow outdoors · Apr 11 – Apr 25
Carrots, beetsSow outdoors · Apr 18 – May 2
TomatoesStart indoors · Mar 14 – Mar 28
TomatoesTransplant · May 16 – May 30
Peppers, eggplantStart indoors · Feb 28 – Mar 14
Peppers, eggplantTransplant · May 23 – Jun 6
BeansSow outdoors · May 16 – May 30
Sweet cornSow outdoors · May 16 – May 30
Cucumbers, squashSow outdoors · May 16 – May 30
Fall lettuce, spinachSow outdoors · Aug 5 – Aug 19
GarlicPlant cloves · Sep 16 – Oct 21
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 9) and first fall frost (Sep 30) 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 12820 came on Apr 16 — about the same time as 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 5a in New York

584 plants native to the lower 48 states, recorded in New York, and rated by the USDA to survive −20 °F or colder — the bottom of zone 5a. Each links to its USDA PLANTS profile.

Trees 68

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 116

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 201

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 179

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 Cleverdale, NY.

Soil in Cleverdale, NY

The soil mapped at the center of ZIP 12820 is Bice — moderately decomposed plant material, well drained.

TextureModerately decomposed plant materialtop layer
DrainageWell drainednatural drainage class
Organic matter60%high
Hydrologic groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: Bice-Woodstock very bouldery fine sandy loams, sloping.

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 12820; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Cleverdale, NY

Summer high82 °Faverage high, July
Winter low10 °Faverage low, January
Hot days6days a year at 90 °F or more
Freezing nights160nights a year at 32 °F or less
Growing degree days2,263base 50 °F — the season’s usable heat
Longest day15 h 25 mindaylight on June 21
Shortest day8 h 57 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation38.2 inper year, rain and melted snow

Average high and low, by month

0°10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 30 °F, low 10 °F 30°10° JanFebruary: average high 33 °F, low 11 °F 33°11° FebMarch: average high 43 °F, low 21 °F 43°21° MarApril: average high 57 °F, low 33 °F 57°33° AprMay: average high 69 °F, low 44 °F 69°44° MayJune: average high 77 °F, low 53 °F 77°53° JunJuly: average high 82 °F, low 58 °F 82°58° JulAugust: average high 80 °F, low 56 °F 80°56° AugSeptember: average high 72 °F, low 48 °F 72°48° SepOctober: average high 59 °F, low 37 °F 59°37° OctNovember: average high 47 °F, low 28 °F 47°28° NovDecember: average high 35 °F, low 18 °F 35°18° Dec

Precipitation by month inches

0″1″2″3″4″5″January: 2.56 in precipitation 2.6 JanFebruary: 1.95 in precipitation 1.9 FebMarch: 2.79 in precipitation 2.8 MarApril: 3.10 in precipitation 3.1 AprMay: 3.35 in precipitation 3.4 MayJune: 3.72 in precipitation 3.7 JunJuly: 4.26 in precipitation 4.3 JulAugust: 3.48 in precipitation 3.5 AugSeptember: 3.30 in precipitation 3.3 SepOctober: 3.68 in precipitation 3.7 OctNovember: 3.01 in precipitation 3.0 NovDecember: 3.01 in precipitation 3.0 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Glens Falls Airport, NY (7 mi away); precipitation: Glens Falls Airport, NY (7 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 5a.

128445a
Kattskill Bay, NY · 2 mi
128455a
Lake George, NY · 4 mi
128275a
Fort Ann, NY · 6 mi
128245a
Diamond Point, NY · 6 mi
128395a
Hudson Falls, NY · 8 mi
128045a
Queensbury, NY · 9 mi
128015a
Glens Falls, NY · 10 mi
128415a
Huletts Landing, NY · 10 mi

New York planting zones →

Questions about 12820

What planting zone is ZIP code 12820?

ZIP code 12820 (Cleverdale, NY) is in USDA hardiness zone 5a on the 2023 map: the coldest night of an average winter reaches −20 to −15 °F (−28.9 to −26.1 °C).

When is the last frost in Cleverdale, NY?

The median last spring frost (32 °F) near 12820 is May 9; after May 25 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Glens Falls Airport station.

When is the first frost in Cleverdale, NY?

The median first fall frost near 12820 is September 30, giving a median frost-free growing season of 143 days.

When should I plant tomatoes in 12820?

Start tomato seeds indoors around Mar 14 – Mar 28 and set transplants outside around May 16 – May 30, one to three weeks after the median last frost.

How much rain and snow does 12820 get?

About 38.2 inches of precipitation a year (NOAA 1991–2020 normals, Glens Falls Airport station).

How hot do summers get in Cleverdale, NY?

The average high peaks at 82 °F in July, with about 6 days a year at 90 °F or more.

What kind of soil does 12820 have?

The USDA soil survey maps Bice at the center of ZIP 12820: moderately decomposed plant material, well drained.

Did spring come early in Cleverdale, NY in 2026?

Spring leaf-out near 12820 came on Apr 16 in 2026, about the same as the 1991–2020 average (Apr 17), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Cleverdale, NY?

Long-day onions: the longest day near 12820 is 15 h 25 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).