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

Planting zone for 15564 — Wellersburg, PA

ZIP code 15564 (Wellersburg, Somerset County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 29 and the first fall frost October 18.

Where ZIP 15564 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.

Zone6b−5 to 0 °F
Coldest night−20.6 to −17.8 °C
Last frostApr 29
First frostOct 18
2012 zone6b

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 6b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Wellersburg, 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 Wellersburg, PA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 29median — 50% chance of a later frost
Safe for tender plantsMay 15only 10% chance of frost after
First fall frostOctober 18median — 10% chance by Oct 5
Growing season171 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 17 and returns around October 29.

From the NOAA station Frostburg 2, MD — 7 miles away, elevation 2,169 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 15564

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 18 – Apr 1
SpinachSow outdoors · Mar 18 – Apr 8
Broccoli, cabbageStart indoors · Feb 18 – Mar 4
Broccoli, cabbageTransplant · Apr 8 – Apr 22
Onion setsPlant outdoors · Apr 1 – Apr 15
PotatoesPlant outdoors · Apr 8 – Apr 22
LettuceSow outdoors · Apr 1 – Apr 15
Carrots, beetsSow outdoors · Apr 8 – Apr 22
TomatoesStart indoors · Mar 4 – Mar 18
TomatoesTransplant · May 6 – May 20
Peppers, eggplantStart indoors · Feb 18 – Mar 4
Peppers, eggplantTransplant · May 13 – May 27
BeansSow outdoors · May 6 – May 20
Sweet cornSow outdoors · May 6 – May 20
Cucumbers, squashSow outdoors · May 6 – May 20
Fall lettuce, spinachSow outdoors · Aug 23 – Sep 6
GarlicPlant cloves · Oct 4 – Nov 8
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 29) and first fall frost (Oct 18) 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 15564 came on Mar 12 — 21 days earlier than the 1991–2020 average (Apr 2).

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 Wellersburg, PA

The soil mapped at the center of ZIP 15564 is Rayne — 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 matter3%moderate
Hydrologic groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: Rayne-Gilpin very stony silt loams, 8 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 15564; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Wellersburg, PA

Summer high79 °Faverage high, July
Winter low19 °Faverage low, January
Hot days1days a year at 90 °F or more
Freezing nights132nights a year at 32 °F or less
Growing degree days2,508base 50 °F — the season’s usable heat
Longest day14 h 59 mindaylight on June 21
Shortest day9 h 21 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation42.5 inper year, rain and melted snow
Snowfall57 inper year; 64 days with snow on the ground

Average high and low, by month

10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 34 °F, low 19 °F 34°19° JanFebruary: average high 37 °F, low 20 °F 37°20° FebMarch: average high 46 °F, low 26 °F 46°26° MarApril: average high 59 °F, low 37 °F 59°37° AprMay: average high 68 °F, low 47 °F 68°47° MayJune: average high 75 °F, low 55 °F 75°55° JunJuly: average high 79 °F, low 59 °F 79°59° JulAugust: average high 78 °F, low 58 °F 78°58° AugSeptember: average high 72 °F, low 52 °F 72°52° SepOctober: average high 60 °F, low 41 °F 60°41° OctNovember: average high 49 °F, low 31 °F 49°31° NovDecember: average high 38 °F, low 24 °F 38°24° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 3.20 in precipitation, 14.9 in snowfall 3.2❄15 JanFebruary: 2.74 in precipitation, 18.1 in snowfall 2.7❄18 FebMarch: 3.82 in precipitation, 9.5 in snowfall 3.8❄10 MarApril: 3.91 in precipitation, 1.5 in snowfall 3.9❄2 AprMay: 4.61 in precipitation 4.6 MayJune: 3.58 in precipitation 3.6 JunJuly: 3.58 in precipitation 3.6 JulAugust: 3.59 in precipitation 3.6 AugSeptember: 3.71 in precipitation 3.7 SepOctober: 3.26 in precipitation, 0.4 in snowfall 3.3 OctNovember: 3.13 in precipitation, 2.6 in snowfall 3.1❄3 NovDecember: 3.36 in precipitation, 9.8 in snowfall 3.4❄10 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Frostburg 2, MD (7 mi away); precipitation: Glencoe, PA (7 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

215456b
Mount Savage, MD · 2 mi
215247a
Corriganville, MD · 3 mi
215297a
Ellerslie, MD · 4 mi
215286b
Eckhart Mines, MD · 6 mi
215017a
Cumberland, MD · 7 mi
215037a
Cumberland, MD · 7 mi
155456b
Hyndman, PA · 7 mi
215027a
Cumberland, MD · 8 mi

Pennsylvania planting zones →

Questions about 15564

What planting zone is ZIP code 15564?

ZIP code 15564 (Wellersburg, PA) is in USDA hardiness zone 6b on the 2023 map: the coldest night of an average winter reaches −5 to 0 °F (−20.6 to −17.8 °C).

When is the last frost in Wellersburg, PA?

The median last spring frost (32 °F) near 15564 is April 29; after May 15 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Frostburg 2 station.

When is the first frost in Wellersburg, PA?

The median first fall frost near 15564 is October 18, giving a median frost-free growing season of 171 days.

When should I plant tomatoes in 15564?

Start tomato seeds indoors around Mar 4 – Mar 18 and set transplants outside around May 6 – May 20, one to three weeks after the median last frost.

How much rain and snow does 15564 get?

About 42.5 inches of precipitation a year and 57 inches of snowfall (NOAA 1991–2020 normals, Glencoe station).

How hot do summers get in Wellersburg, PA?

The average high peaks at 79 °F in July, with about 1 days a year at 90 °F or more.

What kind of soil does 15564 have?

The USDA soil survey maps Rayne at the center of ZIP 15564: channery silt loam, well drained, pH about 5.0 (strongly acidic).

Did spring come early in Wellersburg, PA in 2026?

Spring leaf-out near 15564 came on Mar 12 in 2026, 21 days earlier than the 1991–2020 average (Apr 2), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Wellersburg, PA?

Intermediate onions: the longest day near 15564 is 14 h 59 min, so day-neutral types bulb best; long-day varieties may not bulb fully.