Williamstown, Pennsylvania Weather
Williamstown, Pennsylvania — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery for Williamstown, Dauphin County.
Full aviation weather for Williamstown is published on the Muir Army Air Field (Fort Indiantown Gap) Airport (KMUI) page, 17 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: Schuylkill County Joe Zerbey Airport (KZER) 25 km · Northumberland County Airport (KN79) 29 km · Grimes Airport (K8N1) 32 km · Penn Valley Airport (KSEG) 34 km · Deck Airport (K9D4) 35 km
Conditions reported at KMUI describe the airfield itself. Weather 17 km away can differ, particularly in terrain or near the coast. For conditions at Williamstown specifically, see the current conditions and forecast above.
About Williamstown, Pennsylvania
Williamstown lies cradled by the rolling hills of the Appalachian foothills, a landscape where dense woodlands give way to cultivated fields and the winding ribbon of the Swatara Creek. It lies 19.8 miles north-north-west of Lebanon, PA (from Lebanon, PA: bearing 327°T), and is situated 8.0 miles south-west of Hegins. The air here, particularly in the late afternoon, carries the sweet scent of pine and damp earth, a subtle perfume that clings to the skin. Houses, many built of sturdy stone or weathered clapboard, huddle together along quiet streets, their porches often adorned with rocking chairs that seem to hold the stillness of generations. The terrain, a gentle rise and fall, draws the eye towards the distant, hazy blue of the mountains, a constant, silent backdrop to the daily lives unfolding in Williamstown. The story of Williamstown is deeply entwined with the anthracite coal industry that once pulsed through this region, shaping its very foundations. Though the mines are largely silent now, their legacy lingers in the stoic character of its people and the sturdy, practical architecture that speaks of hard work and resilience. The local economy, while diversified, still bears the imprint of those mining days, with a spirit of self-reliance that is palpable. The Swatara Creek, a vital artery for the early settlers, continues to offer a place of quiet recreation, its clear waters reflecting the changing skies. Williamstown, through its quiet persistence, holds a deep connection to its past, a place where history is not a distant echo, but a living presence in the very texture of the land and the lives of its inhabitants.
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, Dauphin County, Pennsylvania |
| Coordinates | 40.580087°N, 76.617742°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 40.580087°N, 76.617742°W, situated in Dauphin 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.
