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

Planting zone for 14547 — Seneca Castle, NY

ZIP code 14547 (Seneca Castle, Ontario County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is April 30 and the first fall frost October 21.

Where ZIP 14547 is

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.

Zone6a−10 to −5 °F
Coldest night−23.3 to −20.6 °C
Last frostApr 30
First frostOct 21
2012 zone6a

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 6a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Seneca Castle, 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 Seneca Castle, NY

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 30median — 50% chance of a later frost
Safe for tender plantsMay 12only 10% chance of frost after
First fall frostOctober 21median — 10% chance by Oct 4
Growing season173 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 17 and returns around November 2.

From the NOAA station Geneva Rsch Farm, NY — 3 miles away, elevation 719 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 14547

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 19 – Apr 2
SpinachSow outdoors · Mar 19 – Apr 9
Broccoli, cabbageStart indoors · Feb 19 – Mar 5
Broccoli, cabbageTransplant · Apr 9 – Apr 23
Onion setsPlant outdoors · Apr 2 – Apr 16
PotatoesPlant outdoors · Apr 9 – Apr 23
LettuceSow outdoors · Apr 2 – Apr 16
Carrots, beetsSow outdoors · Apr 9 – Apr 23
TomatoesStart indoors · Mar 5 – Mar 19
TomatoesTransplant · May 7 – May 21
Peppers, eggplantStart indoors · Feb 19 – Mar 5
Peppers, eggplantTransplant · May 14 – May 28
BeansSow outdoors · May 7 – May 21
Sweet cornSow outdoors · May 7 – May 21
Cucumbers, squashSow outdoors · May 7 – May 21
Fall lettuce, spinachSow outdoors · Aug 26 – Sep 9
GarlicPlant cloves · Oct 7 – Nov 11
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 30) and first fall frost (Oct 21) 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 14547 came on Apr 8 — 4 days earlier than the 1991–2020 average (Apr 12).

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 6a in New York

635 plants native to the lower 48 states, recorded in New York, and rated by the USDA to survive −10 °F or colder — the bottom of zone 6a. Each links to its USDA PLANTS profile.

Trees 77

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 129

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 215

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 189

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 8

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 creeper2 ft · blooms summer · high shade tolerance · to −13 °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 Seneca Castle, NY.

Soil in Seneca Castle, NY

The soil mapped at the center of ZIP 14547 is Palmyra — gravelly loam, well drained.

TextureGravelly loama good balance for most vegetables
pH7.0neutral; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter3%moderate
Hydrologic groupBwater soaks in moderately
Farmland classprime farmlandUSDA classification

Map unit: Palmyra gravelly loam, 0 to 3 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 14547; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Seneca Castle, NY

Summer high79 °Faverage high, July
Winter low16 °Faverage low, January
Hot days5days a year at 90 °F or more
Freezing nights136nights a year at 32 °F or less
Growing degree days2,419base 50 °F — the season’s usable heat
Longest day15 h 21 mindaylight on June 21
Shortest day9 h 01 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation34.6 inper year, rain and melted snow
Snowfall57 inper year; 77 days with snow on the ground

Average high and low, by month

10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 30 °F, low 16 °F 30°16° JanFebruary: average high 32 °F, low 17 °F 32°17° FebMarch: average high 40 °F, low 24 °F 40°24° MarApril: average high 54 °F, low 35 °F 54°35° AprMay: average high 67 °F, low 46 °F 67°46° MayJune: average high 75 °F, low 56 °F 75°56° JunJuly: average high 79 °F, low 61 °F 79°61° JulAugust: average high 78 °F, low 59 °F 78°59° AugSeptember: average high 71 °F, low 52 °F 71°52° SepOctober: average high 59 °F, low 41 °F 59°41° OctNovember: average high 46 °F, low 32 °F 46°32° NovDecember: average high 36 °F, low 23 °F 36°23° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″January: 1.79 in precipitation, 13.5 in snowfall 1.8❄14 JanFebruary: 1.58 in precipitation, 13.3 in snowfall 1.6❄13 FebMarch: 2.40 in precipitation, 12.8 in snowfall 2.4❄13 MarApril: 2.76 in precipitation, 1.8 in snowfall 2.8❄2 AprMay: 3.27 in precipitation 3.3 MayJune: 3.63 in precipitation 3.6 JunJuly: 3.73 in precipitation 3.7 JulAugust: 3.49 in precipitation 3.5 AugSeptember: 3.26 in precipitation 3.3 SepOctober: 3.83 in precipitation, 0.1 in snowfall 3.8 OctNovember: 2.55 in precipitation, 4.7 in snowfall 2.5❄5 NovDecember: 2.32 in precipitation, 10.4 in snowfall 2.3❄10 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Geneva Rsch Farm, NY (3 mi away); precipitation: Geneva Rsch Farm, NY (3 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

145616a
Stanley, NY · 5 mi
144326b
Clifton Springs, NY · 5 mi
145186b
Oaks Corners, NY · 5 mi
144566b
Geneva, NY · 6 mi
145326b
Phelps, NY · 6 mi
144616b
Gorham, NY · 6 mi
144636a
Hall, NY · 6 mi
145046b
Manchester, NY · 9 mi

New York planting zones →

Questions about 14547

What planting zone is ZIP code 14547?

ZIP code 14547 (Seneca Castle, NY) is in USDA hardiness zone 6a on the 2023 map: the coldest night of an average winter reaches −10 to −5 °F (−23.3 to −20.6 °C).

When is the last frost in Seneca Castle, NY?

The median last spring frost (32 °F) near 14547 is April 30; after May 12 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Geneva Rsch Farm station.

When is the first frost in Seneca Castle, NY?

The median first fall frost near 14547 is October 21, giving a median frost-free growing season of 173 days.

When should I plant tomatoes in 14547?

Start tomato seeds indoors around Mar 5 – Mar 19 and set transplants outside around May 7 – May 21, one to three weeks after the median last frost.

How much rain and snow does 14547 get?

About 34.6 inches of precipitation a year and 57 inches of snowfall (NOAA 1991–2020 normals, Geneva Rsch Farm station).

How hot do summers get in Seneca Castle, NY?

The average high peaks at 79 °F in July, with about 5 days a year at 90 °F or more.

What kind of soil does 14547 have?

The USDA soil survey maps Palmyra at the center of ZIP 14547: gravelly loam, well drained, pH about 7.0 (neutral).

Did spring come early in Seneca Castle, NY in 2026?

Spring leaf-out near 14547 came on Apr 8 in 2026, 4 days earlier than the 1991–2020 average (Apr 12), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Seneca Castle, NY?

Long-day onions: the longest day near 14547 is 15 h 21 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).