Williamstown, Pennsylvania Weather
Williamstown, Pennsylvania — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery, soil and crop conditions for Williamstown, Washington County.
Full aviation weather for Williamstown is published on the Greene County Airport (KWAY) page, 12 km away. It carries the current METAR decoded into plain language — surface wind, visibility, cloud layers and ceiling, temperature and dewpoint, and altimeter setting — alongside the raw observation as transmitted. 6 airfields within reach of Williamstown have their own pages, listed below.
The Terminal Aerodrome Forecast (TAF) is shown across its full validity period, with each change group broken out so you can see when conditions are expected to shift. Flight category is derived automatically — VFR, MVFR, IFR or LIFR — from reported ceiling and visibility, with runway details and field elevation alongside. Observations update roughly hourly and forecasts several times a day.
Other airports near Williamstown: Washington County Airport (KAFJ) 28 km · Rostraver Airport (KFWQ) 31 km · Joseph A. Hardy Connellsville Airport (KVVS) 33 km · Morgantown Municipal Airport Walter L. (Bill) Hart Field (KMGW) 39 km · Allegheny County Airport (KAGC) 43 km
Conditions reported at KWAY describe the airfield itself. Weather 12 km away can differ, particularly in terrain or near the coast. For conditions at Williamstown specifically, see the current conditions and forecast above.
Soil conditions, frost risk and crop weather for Williamstown.
About Williamstown, Pennsylvania
Williamstown rests in a hollow, a deep breath taken by the land before it rises in rolling hills toward the Ohio River. It lies 24.1 miles south of Bethel Park, PA (from Bethel Park, PA: bearing 180°T), and is situated 3.5 miles north-north-east of Jefferson Greene County. The air here, especially after a rain, carries the damp, earthy scent of fertile soil and the faint, sweet perfume of unseen wildflowers clinging to the roadside verges. Fields of corn, their stalks a vibrant green in the summer sun, march in orderly rows up the slopes, punctuated by the darker, more rugged textures of deciduous woodlands that claw at the sky. A quiet creek, its water the color of strong tea, meanders through the valley floor, its gentle murmur a constant counterpoint to the rustle of leaves and the distant drone of an unseen tractor. The houses, many of them weathered wood and practical in design, seem to lean into the landscape, as if seeking shelter from the broad, often dramatic skies that sweep across Washington County. The history of Williamstown is written in the land itself, in the coal seams that once fueled industry and the careful cultivation that now defines its economy. Generations have worked this soil, their lives intertwined with the cycles of planting and harvest, and the echoes of that hard-won labor can still be felt in the stoic resilience of its people. While the grander narratives of industrial booms have long since faded, a quiet industriousness persists, evident in the local businesses that serve the surrounding farms and in the steady hum of activity that marks the heart of Williamstown. The old stone bridges, arching gracefully over the creek, stand as silent witnesses to the passage of time, their surfaces smoothed by countless seasons, hinting at a past that is both sturdy and enduring, much like the land it inhabits.
Live animated radar for Williamstown and surroundings — RainViewer.
NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.
Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload
| Location | Williamstown, Washington County, Pennsylvania |
| Coordinates | 39.979241°N, 80.040888°W |
| Timezone | Eastern Time (America/New_York) |
| ZIP Code(s) | 18080, 15322, 17098 |
| Area Code | 215, 223, 267, 272, 412, 445, 484, 570, 582, 610, 717, 724, 814, 835, 878 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Williamstown, Pennsylvania Weather Page
This page provides live weather conditions and forecasts for Williamstown, Pennsylvania, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, precipitation radar and NOAA GOES-16 satellite imagery. Aviation weather — live METAR observations and TAF forecasts — is published separately on the pages for the nearest reporting airports, linked from the aviation section above. Additional sections may include tide predictions, wave height, wave direction and sea-surface temperature, a barometric pressure trend, and a solunar-based fishing forecast with a fishing-conditions rating for coastal localities, and soil temperature, crop weather and live USGS river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for Williamstown includes coordinates 39.979241°N, 80.040888°W, situated in Washington County. ZIP code 18080, 15322, 17098. Telephone area code: 215, 223, 267, 272, 412, 445, 484, 570, 582, 610, 717, 724, 814, 835, 878. Timezone: Eastern Time (America/New_York).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. River and stream data is sourced from the USGS National Water Information System. Tide predictions are sourced from NOAA CO-OPS; marine and solunar data are modeled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-East and is public domain.
