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

Planting zone for 10591 — Tarrytown, NY

ZIP code 10591 (Tarrytown, Westchester County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 20 and the first fall frost October 26.

Where ZIP 10591 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.

Zone7a0 to 5 °F
Coldest night−17.8 to −15 °C
Last frostApr 20
First frostOct 26
2012 zone7a

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 7a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Tarrytown, 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 Tarrytown, NY

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 20median — 50% chance of a later frost
Safe for tender plantsMay 6only 10% chance of frost after
First fall frostOctober 26median — 10% chance by Oct 10
Growing season189 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 4 and returns around November 7.

From the NOAA station Dobbs Ferry-Ardsley, NY — 5 miles away, elevation 200 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 10591

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 9 – Mar 23
SpinachSow outdoors · Mar 9 – Mar 30
Broccoli, cabbageStart indoors · Feb 9 – Feb 23
Broccoli, cabbageTransplant · Mar 30 – Apr 13
Onion setsPlant outdoors · Mar 23 – Apr 6
PotatoesPlant outdoors · Mar 30 – Apr 13
LettuceSow outdoors · Mar 23 – Apr 6
Carrots, beetsSow outdoors · Mar 30 – Apr 13
TomatoesStart indoors · Feb 23 – Mar 9
TomatoesTransplant · Apr 27 – May 11
Peppers, eggplantStart indoors · Feb 9 – Feb 23
Peppers, eggplantTransplant · May 4 – May 18
BeansSow outdoors · Apr 27 – May 11
Sweet cornSow outdoors · Apr 27 – May 11
Cucumbers, squashSow outdoors · Apr 27 – May 11
Fall lettuce, spinachSow outdoors · Aug 31 – Sep 14
GarlicPlant cloves · Oct 12 – Nov 16
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 20) and first fall frost (Oct 26) 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 10591 came on Mar 27 — 4 days earlier than the 1991–2020 average (Mar 31).

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 Tarrytown, NY

The soil mapped at the center of ZIP 10591 is Charlton — fine sandy loam, well drained.

TextureFine sandy loamdrains and warms fast; dries out and needs more feeding
pH5.1strongly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter4%moderate
Hydrologic groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: Charlton fine sandy loam, 15 to 25 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 10591; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Tarrytown, NY

Summer high86 °Faverage high, July
Winter low23 °Faverage low, January
Hot days19days a year at 90 °F or more
Freezing nights109nights a year at 32 °F or less
Growing degree days3,333base 50 °F — the season’s usable heat
Longest day15 h 08 mindaylight on June 21
Shortest day9 h 13 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation51.2 inper year, rain and melted snow
Snowfall33 inper year; 39 days with snow on the ground

Average high and low, by month

10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 40 °F, low 23 °F 40°23° JanFebruary: average high 43 °F, low 25 °F 43°25° FebMarch: average high 51 °F, low 31 °F 51°31° MarApril: average high 63 °F, low 40 °F 63°40° AprMay: average high 73 °F, low 50 °F 73°50° MayJune: average high 81 °F, low 59 °F 81°59° JunJuly: average high 86 °F, low 64 °F 86°64° JulAugust: average high 84 °F, low 63 °F 84°63° AugSeptember: average high 77 °F, low 56 °F 77°56° SepOctober: average high 65 °F, low 45 °F 65°45° OctNovember: average high 54 °F, low 36 °F 54°36° NovDecember: average high 45 °F, low 29 °F 45°29° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 3.87 in precipitation, 9.4 in snowfall 3.9❄9 JanFebruary: 3.30 in precipitation, 10.9 in snowfall 3.3❄11 FebMarch: 4.37 in precipitation, 5.8 in snowfall 4.4❄6 MarApril: 4.26 in precipitation, 0.7 in snowfall 4.3❄1 AprMay: 4.27 in precipitation 4.3 MayJune: 4.58 in precipitation 4.6 JunJuly: 4.53 in precipitation 4.5 JulAugust: 4.44 in precipitation 4.4 AugSeptember: 4.61 in precipitation 4.6 SepOctober: 4.43 in precipitation 4.4 OctNovember: 3.88 in precipitation, 0.3 in snowfall 3.9 NovDecember: 4.70 in precipitation, 5.6 in snowfall 4.7❄6 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Dobbs Ferry-Ardsley, NY (5 mi away); precipitation: Dobbs Ferry-Ardsley, NY (5 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 7a.

105237a
Elmsford, NY · 2 mi
105327a
Hawthorne, NY · 3 mi
105337a
Irvington, NY · 3 mi
105957a
Valhalla, NY · 4 mi
106077a
White Plains, NY · 4 mi
105107a
Briarcliff Manor, NY · 4 mi
106037a
White Plains, NY · 4 mi
109607a
Nyack, NY · 4 mi

New York planting zones →

Questions about 10591

What planting zone is ZIP code 10591?

ZIP code 10591 (Tarrytown, NY) is in USDA hardiness zone 7a on the 2023 map: the coldest night of an average winter reaches 0 to 5 °F (−17.8 to −15 °C).

When is the last frost in Tarrytown, NY?

The median last spring frost (32 °F) near 10591 is April 20; after May 6 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Dobbs Ferry-Ardsley station.

When is the first frost in Tarrytown, NY?

The median first fall frost near 10591 is October 26, giving a median frost-free growing season of 189 days.

When should I plant tomatoes in 10591?

Start tomato seeds indoors around Feb 23 – Mar 9 and set transplants outside around Apr 27 – May 11, one to three weeks after the median last frost.

How much rain and snow does 10591 get?

About 51.2 inches of precipitation a year and 33 inches of snowfall (NOAA 1991–2020 normals, Dobbs Ferry-Ardsley station).

How hot do summers get in Tarrytown, NY?

The average high peaks at 86 °F in July, with about 19 days a year at 90 °F or more.

What kind of soil does 10591 have?

The USDA soil survey maps Charlton at the center of ZIP 10591: fine sandy loam, well drained, pH about 5.1 (strongly acidic).

Did spring come early in Tarrytown, NY in 2026?

Spring leaf-out near 10591 came on Mar 27 in 2026, 4 days earlier than the 1991–2020 average (Mar 31), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Tarrytown, NY?

Long-day onions: the longest day near 10591 is 15 h 08 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).