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Williamsburg, Pennsylvania Weather Forecast
Williamsburg, Pennsylvania Weather
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Weather Forecast for Williamsburg, Pennsylvania : Armstrong County
Issued: 5:03 am EST Jan 23, 2026 Latitude: 40.8100642 Longitude: -79.5231005 View on Google Maps

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Today Tonight Saturday Sunday Monday Tuesday Wednesday Thursday
Partly Sunny on Today Cloudy on Tonight Partly Sunny on Saturday 100% chance of snow on Sunday 60% chance of snow on Monday Mostly Cloudy on Tuesday Mostly Cloudy on Wednesday Mostly Cloudy on Thursday
High: 11 °F Low: -2°F High: 15°F High: 24°F High: 21°F High: 18°F High: 20°F High: 17°F
Low: 10°F Low: 13°F Low: -2°F Low: 5°F Low: 2°F  
Partly Sunny Cloudy Partly Sunny Snow Snow Mostly Cloudy Mostly Cloudy Mostly Cloudy
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Current Conditions at
BUTLER COUNTY - (KBTP)
23°
Feels like 12°F
Cloudy
as of 3:56 AM EST
Rel. Humidity: 57%
Dew Point: 10°F
Visibility: 10 Miles
Pressure: 30.16 in.
Flight Rule: VFR
Wind Data
10 MPH
Gust: 22 MPH
270° West
Cloud Level(s): Solid Overcast at 4000ft
Current Conditions at
STEWART FIELD - (KIDI)
25°
Feels like 9°F
Cloudy
as of 4:35 AM EST
Rel. Humidity: 53%
Dew Point: 10°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
23 MPH
Gust: 30 MPH
260° West
Cloud Level(s): Few at 3400ft, Scattered at 4200ft, Solid Overcast at 4900ft
Current Conditions at
LATROBE - (KLBE)
27°
Feels like 16°F
Mostly Clear
as of 4:35 AM EST
Rel. Humidity: 49%
Dew Point: 10°F
Visibility: 10 Miles
Pressure: 30.18 in.
Flight Rule: VFR
Wind Data
10 MPH
250° West
Cloud Level(s): Few at 11000ft
Current Conditions at
JOHNSTOWN - (KJST)
21°
Feels like 7°F
Mostly Cloudy
as of 3:54 AM EST
Rel. Humidity: 53%
Dew Point: 7°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
15 MPH
Gust: 24 MPH
240° Southwest
Cloud Level(s): Broken at 10000ft
Partly Sunny on Today Today... Partly sunny, with a temperature falling to around 11 by 5pm. Wind chill values as low as -3. West wind 9 to 14 mph, with gusts as high as 25 mph.
Cloudy on Tonight Tonight... Partly cloudy, with a low around -2. Wind chill values as low as -9. Northwest wind 5 to 8 mph becoming calm after midnight.
Partly Sunny on Saturday Saturday... Partly sunny and cold, with a high near 15. Wind chill values as low as -2. Light and variable wind.
90% chance of snow Saturday Night Saturday Night... Snow, mainly after 1am. Low around 10. Wind chill values as low as zero. East wind 3 to 8 mph. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
100% chance of snow Sunday Sunday... Snow. The snow could be heavy at times. High near 24. East wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
90% chance of snow Sunday Night Sunday Night... Snow. Low around 13. Chance of precipitation is 90%.
60% chance of snow Monday Monday... Snow likely, mainly before 1pm. Mostly cloudy, with a high near 21. Chance of precipitation is 60%.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around -2.
Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 18.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 5.
Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 20.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 2.
Mostly Cloudy on Thursday Thursday... Mostly cloudy, with a high near 17.
Current Radar Image


Sun Almanac for Williamsburg, Pennsylvania
Sunrise: 07:36 AM
Sunset: 5:24 PM
Civil Sunrise:07:06 AM
Civil Sunset: 5:54 PM
Nautical Sunrise: 06:33 AM
Nautical Sunset: 6:27 PM
Astro Sunrise: 06:00 AM
Astro Sunset: 7:00 PM
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