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

Planting zone for 18846 — Sugar Run, PA

ZIP code 18846 (Sugar Run, Bradford County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is May 14 and the first fall frost October 2.

Where ZIP 18846 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.

Zone6a−10 to −5 °F
Coldest night−23.3 to −20.6 °C
Last frostMay 14
First frostOct 2
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 Sugar Run, 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 Sugar Run, PA

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 27only 10% chance of frost after
First fall frostOctober 2median — 10% chance by Sep 20
Growing season143 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 1 and returns around October 15.

From the NOAA station Dushore, PA — 11 miles away, elevation 1,529 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 18846

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 7 – Aug 21
GarlicPlant cloves · Sep 18 – Oct 23
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 14) and first fall frost (Oct 2) 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 18846 came on Apr 3 — 8 days earlier than the 1991–2020 average (Apr 11).

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 Pennsylvania

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

Trees 76

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 121

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 207

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 170

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 9

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 Sugar Run, PA.

Soil in Sugar Run, PA

The soil mapped at the center of ZIP 18846 is Oquaga — channery silt loam, well drained.

TextureChannery silt loama good balance for most vegetables
pH5.5moderately acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter5%high
Hydrologic groupCwater soaks in slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Oquaga channery silt 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 18846; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Sugar Run, PA

Summer high80 °Faverage high, July
Winter low15 °Faverage low, January
Hot days2days a year at 90 °F or more
Freezing nights166nights a year at 32 °F or less
Growing degree days2,111base 50 °F — the season’s usable heat
Longest day15 h 12 mindaylight on June 21
Shortest day9 h 09 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation43.4 inper year, rain and melted snow
Snowfall41 inper year; 55 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 32 °F, low 15 °F 32°15° JanFebruary: average high 35 °F, low 16 °F 35°16° FebMarch: average high 43 °F, low 22 °F 43°22° MarApril: average high 56 °F, low 32 °F 56°32° 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 47 °F 71°47° SepOctober: average high 60 °F, low 37 °F 60°37° OctNovember: average high 47 °F, low 29 °F 47°29° NovDecember: average high 38 °F, low 21 °F 38°21° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 3.08 in precipitation, 10.6 in snowfall 3.1❄11 JanFebruary: 2.25 in precipitation, 10.6 in snowfall 2.3❄11 FebMarch: 3.13 in precipitation, 6.9 in snowfall 3.1❄7 MarApril: 3.95 in precipitation, 2 in snowfall 4.0❄2 AprMay: 4.10 in precipitation, 0.1 in snowfall 4.1 MayJune: 3.97 in precipitation 4.0 JunJuly: 4.52 in precipitation 4.5 JulAugust: 4.50 in precipitation 4.5 AugSeptember: 4.13 in precipitation 4.1 SepOctober: 3.81 in precipitation, 0.7 in snowfall 3.8❄1 OctNovember: 2.91 in precipitation, 2.5 in snowfall 2.9❄3 NovDecember: 3.08 in precipitation, 8 in snowfall 3.1❄8 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Dushore, PA (11 mi away); precipitation: Dushore, PA (11 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6a.

186236a
Laceyville, PA · 5 mi
188536a
Wyalusing, PA · 7 mi
188156a
Camptown, PA · 8 mi
186296a
Mehoopany, PA · 9 mi
186306a
Meshoppen, PA · 11 mi
186146a
Dushore, PA · 12 mi
188456a
Stevensville, PA · 12 mi
188336a
New Albany, PA · 13 mi

Pennsylvania planting zones →

Questions about 18846

What planting zone is ZIP code 18846?

ZIP code 18846 (Sugar Run, PA) 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 Sugar Run, PA?

The median last spring frost (32 °F) near 18846 is May 14; after May 27 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Dushore station.

When is the first frost in Sugar Run, PA?

The median first fall frost near 18846 is October 2, giving a median frost-free growing season of 143 days.

When should I plant tomatoes in 18846?

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 18846 get?

About 43.4 inches of precipitation a year and 41 inches of snowfall (NOAA 1991–2020 normals, Dushore station).

How hot do summers get in Sugar Run, 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 18846 have?

The USDA soil survey maps Oquaga at the center of ZIP 18846: channery silt loam, well drained, pH about 5.5 (moderately acidic).

Did spring come early in Sugar Run, PA in 2026?

Spring leaf-out near 18846 came on Apr 3 in 2026, 8 days earlier than the 1991–2020 average (Apr 11), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Sugar Run, PA?

Long-day onions: the longest day near 18846 is 15 h 12 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).