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

Planting zone for 13607 — Alexandria Bay, NY

ZIP code 13607 (Alexandria Bay, Jefferson County) is in USDA zone 5a: the coldest winter night averages −20 to −15 °F. The median last spring frost is May 14 and the first fall frost September 26.

Where ZIP 13607 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 14
First frostSep 26
2012 zone4b

Was 4b on the 2012 map — half a zone warmer now. 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 Alexandria Bay, 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 Alexandria Bay, NY

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 14median — 50% chance of a later frost
Safe for tender plantsMay 30only 10% chance of frost after
First fall frostSeptember 26median — 10% chance by Sep 12
Growing season134 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 2 and returns around October 8.

From the NOAA station Gouverneur 3 Nw, NY — 20 miles away, elevation 420 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 13607

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Apr 2 – Apr 16
SpinachSow outdoors · Apr 2 – Apr 23
Broccoli, cabbageStart indoors · Mar 5 – Mar 19
Broccoli, cabbageTransplant · Apr 23 – May 7
Onion setsPlant outdoors · Apr 16 – Apr 30
PotatoesPlant outdoors · Apr 23 – May 7
LettuceSow outdoors · Apr 16 – Apr 30
Carrots, beetsSow outdoors · Apr 23 – May 7
TomatoesStart indoors · Mar 19 – Apr 2
TomatoesTransplant · May 21 – Jun 4
Peppers, eggplantStart indoors · Mar 5 – Mar 19
Peppers, eggplantTransplant · May 28 – Jun 11
BeansSow outdoors · May 21 – Jun 4
Sweet cornSow outdoors · May 21 – Jun 4
Cucumbers, squashSow outdoors · May 21 – Jun 4
Fall lettuce, spinachSow outdoors · Aug 1 – Aug 15
GarlicPlant cloves · Sep 12 – Oct 17
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 14) and first fall frost (Sep 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 13607 came on Apr 16 — about the same time as the 1991–2020 average (Apr 18).

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 Alexandria Bay, NY

The soil mapped at the center of ZIP 13607 is Rhinebeck — silt loam, somewhat poorly drained.

TextureSilt loama good balance for most vegetables
pH6.2slightly acidic; most vegetables like 6.0–7.0
DrainageSomewhat poorly drainedconsider raised beds
Organic matter5%high
Hydrologic groupC/Dslow when drained; wet otherwise
Farmland classNot prime farmlandUSDA classification

Map unit: Rhinebeck-Chatfield-Rock outcrop complex, rolling.

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 13607; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Alexandria Bay, NY

Summer high79 °Faverage high, July
Winter low5 °Faverage low, January
Hot days3days a year at 90 °F or more
Freezing nights166nights a year at 32 °F or less
Growing degree days2,073base 50 °F — the season’s usable heat
Longest day15 h 32 mindaylight on June 21
Shortest day8 h 51 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation48.9 inper year, rain and melted snow

Average high and low, by month

−10°0°10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 27 °F, low 5 °F 27°5° JanFebruary: average high 29 °F, low 6 °F 29°6° FebMarch: average high 39 °F, low 17 °F 39°17° MarApril: average high 53 °F, low 31 °F 53°31° AprMay: average high 66 °F, low 42 °F 66°42° MayJune: average high 75 °F, low 53 °F 75°53° JunJuly: average high 79 °F, low 57 °F 79°57° JulAugust: average high 78 °F, low 55 °F 78°55° AugSeptember: average high 71 °F, low 47 °F 71°47° SepOctober: average high 58 °F, low 36 °F 58°36° OctNovember: average high 45 °F, low 27 °F 45°27° NovDecember: average high 33 °F, low 15 °F 33°15° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 4.70 in precipitation 4.7 JanFebruary: 2.85 in precipitation 2.9 FebMarch: 4.17 in precipitation 4.2 MarApril: 3.57 in precipitation 3.6 AprMay: 3.48 in precipitation 3.5 MayJune: 4.75 in precipitation 4.8 JunJuly: 3.25 in precipitation 3.3 JulAugust: 4.03 in precipitation 4.0 AugSeptember: 4.43 in precipitation 4.4 SepOctober: 5.29 in precipitation 5.3 OctNovember: 3.87 in precipitation 3.9 NovDecember: 4.49 in precipitation 4.5 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Gouverneur 3 Nw, NY (20 mi away); precipitation: Theresa 4nw, NY (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

136405b
Wellesley Island, NY · 4 mi
136755a
Plessis, NY · 5 mi
136415b
Fishers Landing, NY · 6 mi
136925a
Thousand Island Park, NY · 6 mi
136795a
Redwood, NY · 7 mi
136915a
Theresa, NY · 10 mi
136565a
La Fargeville, NY · 10 mi
136235a
Chippewa Bay, NY · 11 mi

New York planting zones →

Questions about 13607

What planting zone is ZIP code 13607?

ZIP code 13607 (Alexandria Bay, 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 Alexandria Bay, NY?

The median last spring frost (32 °F) near 13607 is May 14; after May 30 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Gouverneur 3 Nw station.

When is the first frost in Alexandria Bay, NY?

The median first fall frost near 13607 is September 26, giving a median frost-free growing season of 134 days.

When should I plant tomatoes in 13607?

Start tomato seeds indoors around Mar 19 – Apr 2 and set transplants outside around May 21 – Jun 4, one to three weeks after the median last frost.

How much rain and snow does 13607 get?

About 48.9 inches of precipitation a year (NOAA 1991–2020 normals, Theresa 4nw station).

How hot do summers get in Alexandria Bay, NY?

The average high peaks at 79 °F in July, with about 3 days a year at 90 °F or more.

What kind of soil does 13607 have?

The USDA soil survey maps Rhinebeck at the center of ZIP 13607: silt loam, somewhat poorly drained, pH about 6.2 (slightly acidic).

Did spring come early in Alexandria Bay, NY in 2026?

Spring leaf-out near 13607 came on Apr 16 in 2026, about the same as the 1991–2020 average (Apr 18), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Alexandria Bay, NY?

Long-day onions: the longest day near 13607 is 15 h 32 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 13607 change?

Yes. The 2012 USDA map put 13607 in zone 4b; the 2023 map puts it in zone 5a. The newer map uses 1991–2020 data and more weather stations.