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

Planting zone for 16750 — Turtlepoint, PA

ZIP code 16750 (Turtlepoint, McKean County) is in USDA zone 5b: the coldest winter night averages −15 to −10 °F. The median last spring frost is May 15 and the first fall frost October 6.

Where ZIP 16750 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 15
First frostOct 6
2012 zone5a

Was 5a 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 5b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Turtlepoint, PA…

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 Turtlepoint, PA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 15median — 50% chance of a later frost
Safe for tender plantsMay 29only 10% chance of frost after
First fall frostOctober 6median — 10% chance by Sep 25
Growing season144 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 2 and returns around October 20.

From the NOAA station Port Allegany, PA — 6 miles away, elevation 1,476 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 16750

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Apr 3 – Apr 17
SpinachSow outdoors · Apr 3 – Apr 24
Broccoli, cabbageStart indoors · Mar 6 – Mar 20
Broccoli, cabbageTransplant · Apr 24 – May 8
Onion setsPlant outdoors · Apr 17 – May 1
PotatoesPlant outdoors · Apr 24 – May 8
LettuceSow outdoors · Apr 17 – May 1
Carrots, beetsSow outdoors · Apr 24 – May 8
TomatoesStart indoors · Mar 20 – Apr 3
TomatoesTransplant · May 22 – Jun 5
Peppers, eggplantStart indoors · Mar 6 – Mar 20
Peppers, eggplantTransplant · May 29 – Jun 12
BeansSow outdoors · May 22 – Jun 5
Sweet cornSow outdoors · May 22 – Jun 5
Cucumbers, squashSow outdoors · May 22 – Jun 5
Fall lettuce, spinachSow outdoors · Aug 11 – Aug 25
GarlicPlant cloves · Sep 22 – Oct 27
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 15) and first fall frost (Oct 6) 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 16750 came on Apr 5 — 9 days earlier than the 1991–2020 average (Apr 14).

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 Pennsylvania

572 plants native to the lower 48 states, recorded in Pennsylvania, 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 113

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 198

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 166

American 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 spikerush3 ft · blooms late spring · high shade tolerance · to −28 °FBebb's sedge3 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 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 Turtlepoint, PA.

Soil in Turtlepoint, PA

The soil mapped at the center of ZIP 16750 is Hartleton — channery silt loam, well drained.

TextureChannery silt loama good balance for most vegetables
pH5.0strongly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter2%moderate
Hydrologic groupAwater soaks in fast
Farmland classFarmland of statewide importanceUSDA classification

Map unit: Hartleton channery silt loam, 8 to 15 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 16750; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Turtlepoint, PA

Summer high80 °Faverage high, July
Winter low14 °Faverage low, January
Hot days2days a year at 90 °F or more
Freezing nights165nights a year at 32 °F or less
Growing degree days2,109base 50 °F — the season’s usable heat
Longest day15 h 14 mindaylight on June 21
Shortest day9 h 07 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation42.6 inper year, rain and melted snow
Snowfall55 inper year; 65 days with snow on the ground

Average high and low, by month

0°10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 31 °F, low 14 °F 31°14° JanFebruary: average high 34 °F, low 15 °F 34°15° FebMarch: average high 43 °F, low 22 °F 43°22° MarApril: average high 57 °F, low 31 °F 57°31° AprMay: average high 68 °F, low 43 °F 68°43° MayJune: average high 76 °F, low 52 °F 76°52° JunJuly: average high 80 °F, low 56 °F 80°56° JulAugust: average high 78 °F, low 55 °F 78°55° AugSeptember: average high 71 °F, low 48 °F 71°48° SepOctober: average high 59 °F, low 37 °F 59°37° OctNovember: average high 47 °F, low 28 °F 47°28° NovDecember: average high 36 °F, low 21 °F 36°21° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 3.05 in precipitation, 14.1 in snowfall 3.0❄14 JanFebruary: 2.25 in precipitation, 12.1 in snowfall 2.3❄12 FebMarch: 2.98 in precipitation, 9.4 in snowfall 3.0❄9 MarApril: 3.53 in precipitation, 1.7 in snowfall 3.5❄2 AprMay: 3.83 in precipitation 3.8 MayJune: 4.24 in precipitation 4.2 JunJuly: 4.53 in precipitation 4.5 JulAugust: 4.10 in precipitation 4.1 AugSeptember: 3.69 in precipitation 3.7 SepOctober: 3.88 in precipitation, 0.6 in snowfall 3.9❄1 OctNovember: 3.27 in precipitation, 3.9 in snowfall 3.3❄4 NovDecember: 3.24 in precipitation, 13.3 in snowfall 3.2❄13 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Port Allegany, PA (6 mi away); precipitation: Port Allegany, PA (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 5b.

167315b
Eldred, PA · 5 mi
147215b
Ceres, NY · 8 mi
167485b
Shinglehouse, PA · 8 mi
167305b
East Smethport, PA · 9 mi
147705b
Portville, NY · 9 mi
147545b
Little Genesee, NY · 10 mi
167435b
Port Allegany, PA · 10 mi
167455b
Rixford, PA · 10 mi

Pennsylvania planting zones →

Questions about 16750

What planting zone is ZIP code 16750?

ZIP code 16750 (Turtlepoint, PA) 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 Turtlepoint, PA?

The median last spring frost (32 °F) near 16750 is May 15; after May 29 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Port Allegany station.

When is the first frost in Turtlepoint, PA?

The median first fall frost near 16750 is October 6, giving a median frost-free growing season of 144 days.

When should I plant tomatoes in 16750?

Start tomato seeds indoors around Mar 20 – Apr 3 and set transplants outside around May 22 – Jun 5, one to three weeks after the median last frost.

How much rain and snow does 16750 get?

About 42.6 inches of precipitation a year and 55 inches of snowfall (NOAA 1991–2020 normals, Port Allegany station).

How hot do summers get in Turtlepoint, PA?

The average high peaks at 80 °F in July, with about 2 days a year at 90 °F or more.

What kind of soil does 16750 have?

The USDA soil survey maps Hartleton at the center of ZIP 16750: channery silt loam, well drained, pH about 5.0 (strongly acidic).

Did spring come early in Turtlepoint, PA in 2026?

Spring leaf-out near 16750 came on Apr 5 in 2026, 9 days earlier than the 1991–2020 average (Apr 14), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Turtlepoint, PA?

Long-day onions: the longest day near 16750 is 15 h 14 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 16750 change?

Yes. The 2012 USDA map put 16750 in zone 5a; the 2023 map puts it in zone 5b. The newer map uses 1991–2020 data and more weather stations.