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

Planting zone for 18630 — Meshoppen, PA

ZIP code 18630 (Meshoppen, Wyoming 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 18630 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 Meshoppen, 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 Meshoppen, 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 28only 10% chance of frost after
First fall frostOctober 2median — 10% chance by Sep 20
Growing season141 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 2 and returns around October 15.

From the NOAA station Montrose, PA — 16 miles away, elevation 1,421 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 18630

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 18630 came on Apr 3 — 9 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).

Soil in Meshoppen, PA

The soil mapped at the center of ZIP 18630 is Morris — channery silt loam, somewhat poorly drained.

TextureChannery silt loama good balance for most vegetables
pH5.5moderately acidic; most vegetables like 6.0–7.0
DrainageSomewhat poorly drainedconsider raised beds
Organic matter5%high
Hydrologic groupDwater soaks in very slowly
Farmland classFarmland of statewide importanceUSDA classification

Map unit: Morris channery silt loam, 8 to 15 percent slopes, eroded.

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 18630; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Meshoppen, PA

Summer high80 °Faverage high, July
Winter low13 °Faverage low, January
Hot days3days a year at 90 °F or more
Freezing nights168nights a year at 32 °F or less
Growing degree days2,067base 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)
Precipitation42.9 inper year, rain and melted snow
Snowfall48 inper year; 58 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 13 °F 31°13° JanFebruary: average high 33 °F, low 13 °F 33°13° FebMarch: average high 41 °F, low 21 °F 41°21° MarApril: average high 55 °F, low 32 °F 55°32° AprMay: average high 67 °F, low 42 °F 67°42° MayJune: average high 75 °F, low 52 °F 75°52° JunJuly: average high 80 °F, low 56 °F 80°56° JulAugust: average high 79 °F, low 54 °F 79°54° AugSeptember: average high 71 °F, low 47 °F 71°47° SepOctober: average high 59 °F, low 36 °F 59°36° OctNovember: average high 47 °F, low 27 °F 47°27° NovDecember: average high 36 °F, low 19 °F 36°19° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 2.64 in precipitation, 14 in snowfall 2.6❄14 JanFebruary: 2.15 in precipitation, 8.6 in snowfall 2.1❄9 FebMarch: 3.29 in precipitation, 11.8 in snowfall 3.3❄12 MarApril: 3.80 in precipitation, 1.9 in snowfall 3.8❄2 AprMay: 3.72 in precipitation 3.7 MayJune: 4.59 in precipitation 4.6 JunJuly: 4.29 in precipitation 4.3 JulAugust: 3.93 in precipitation 3.9 AugSeptember: 4.28 in precipitation 4.3 SepOctober: 3.95 in precipitation, 0.1 in snowfall 4.0 OctNovember: 3.22 in precipitation, 2.6 in snowfall 3.2❄3 NovDecember: 3.05 in precipitation, 8.8 in snowfall 3.0❄9 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Montrose, PA (16 mi away); precipitation: Rushville, PA (10 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

188446a
Springville, PA · 6 mi
186236a
Laceyville, PA · 7 mi
188166a
Dimock, PA · 8 mi
186576a
Tunkhannock, PA · 10 mi
188286a
Lawton, PA · 10 mi
188466a
Sugar Run, PA · 11 mi
186296a
Mehoopany, PA · 12 mi
188435b
South Montrose, PA · 12 mi

Pennsylvania planting zones →

Questions about 18630

What planting zone is ZIP code 18630?

ZIP code 18630 (Meshoppen, 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 Meshoppen, PA?

The median last spring frost (32 °F) near 18630 is May 14; after May 28 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Montrose station.

When is the first frost in Meshoppen, PA?

The median first fall frost near 18630 is October 2, giving a median frost-free growing season of 141 days.

When should I plant tomatoes in 18630?

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 18630 get?

About 42.9 inches of precipitation a year and 48 inches of snowfall (NOAA 1991–2020 normals, Rushville station).

How hot do summers get in Meshoppen, PA?

The average high peaks at 80 °F in July, with about 3 days a year at 90 °F or more.

What kind of soil does 18630 have?

The USDA soil survey maps Morris at the center of ZIP 18630: channery silt loam, somewhat poorly drained, pH about 5.5 (moderately acidic).

Did spring come early in Meshoppen, PA in 2026?

Spring leaf-out near 18630 came on Apr 3 in 2026, 9 days earlier than the 1991–2020 average (Apr 12), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Meshoppen, PA?

Long-day onions: the longest day near 18630 is 15 h 12 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).