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Greencastle, Pennsylvania Weather

Greencastle, Pennsylvania — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery for Greencastle, Franklin County.

🌡️ Current Conditions
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24-Hour Forecast
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Current Conditions Detail
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7-Day Forecast
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✈️ Aviation Weather

Flight conditions near Greencastle. Data source: locating…

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🌿 Air Quality
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About Greencastle, Pennsylvania

Greencastle lies at the heart of a fertile valley, where the rolling hills of Franklin County gently unfurl like rumpled linen. It lies 10.3 miles north of Hagerstown, MD (from Hagerstown, MD: bearing 358°T), and is situated 2.3 miles north of Antrim Township. The air here, especially in the late afternoon, carries the sweet, earthy scent of sun-baked soil and ripening corn, a perfume that clings to the weathered barns and the quiet streets. Ancient oak trees, their limbs gnarled and widespread, stand sentinel along the roadside, their leaves whispering secrets to the passing breeze. The landscape is a patchwork of verdant fields, punctuated by the darker green of distant woodlands, and crisscrossed by narrow lanes that invite slow exploration, promising glimpses of sturdy farmhouses and grazing livestock. This is a place shaped by the steady hand of agriculture, where generations have coaxed sustenance from the rich limestone soil. The legacy of those who first settled here, drawn by the promise of fertile ground, is still palpable in the enduring farmsteads and the careful cultivation of the land. While the economy has diversified over the years, the agricultural spirit remains, a quiet current beneath the surface of everyday life. The nearby Antietam Creek, a ribbon of silver threading through the countryside, has witnessed the ebb and flow of history, its waters reflecting the passage of time and the enduring character of Greencastle.

NWS Extended Forecast
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📡 Precipitation Radar

Live animated radar for Greencastle and surroundings — RainViewer.

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🛰️ Satellite Imagery

NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.

NOAA GOES-16 CONUS GEOCOLOR satellite animated loop
🛰️ GEOCOLOR loop 🌡️ Infrared (IR) 🌀 NHC Hurricane Satellite 🔗 NOAA Full Viewer

Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload

🌙 Astronomy
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LocationGreencastle, Franklin County, Pennsylvania
Coordinates39.790371°N, 77.727771°W
TimezoneEastern Time (America/New_York)
ZIP Code(s)17225
Area Code215, 223, 267, 272, 412, 445, 484, 570, 582, 610, 717, 724, 814, 835, 878
Page generatedJuly 2026
Weather dataOpen-Meteo (open-source), NOAA National Weather Service

About This Greencastle, Pennsylvania Weather Page

This page provides live weather conditions and forecasts for Greencastle, Pennsylvania, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, real-time aviation weather (live METAR and TAF reports from the nearest reporting airport, with a modeled estimate shown when no station is in range), precipitation radar and NOAA GOES-16 satellite imagery. 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 Greencastle includes coordinates 39.790371°N, 77.727771°W, situated in Franklin County. ZIP code 17225. 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. Aviation data is sourced from aviationweather.gov (NOAA), with a modeled estimate used where no nearby reporting station is available. 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.