Williamsburg, Pennsylvania Weather
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Weather Forecast for Williamsburg, Pennsylvania : Armstrong County
Issued: 7:03 pm EDT Sep 4, 2025 Latitude: 40.8100642 Longitude: -79.5231005 View on Google Maps

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Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
Patchy Fog on Tonight Clearing on Friday 80% chance of rain on Saturday Morning Fog on Sunday Morning Fog on Monday Morning Fog on Tuesday Patchy Fog on Wednesday Patchy Fog on Thursday
Low: 53°F High: 83°F High: 68°F High: 70°F High: 72°F High: 76°F High: 80°F High: 80°F
Low: 55°F Low: 46°F Low: 42°F Low: 42°F Low: 47°F Low: 50°F  
Patchy Fog Clearing Rain Morning Fog Morning Fog Morning Fog Patchy Fog Patchy Fog
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Current Conditions at
BUTLER COUNTY - (KBTP)
57°
Clear
Fog
as of 8:40 PM EDST
Rel. Humidity: 9%
Visibility: 1/4 Miles
Pressure: 29.83 in.
Flight Rule: IFR
Wind Data
Calm
Current Conditions at
STEWART FIELD - (KIDI)
59°
Cloudy
as of 8:35 PM EDST
Rel. Humidity: 100%
Dew Point: 59°F
Visibility: 9 Miles
Pressure: 29.84 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Scattered at 800ft, Solid Overcast at 1400ft
Current Conditions at
LATROBE - (KLBE)
61°
Cloudy
Light Rain Mist
as of 7:50 PM EDST
Rel. Humidity: 100%
Dew Point: 61°F
Visibility: 6 Miles
Pressure: 29.83 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Broken at 1600ft, Broken at 2900ft, Solid Overcast at 4000ft
Current Conditions at
JOHNSTOWN - (KJST)
57°
Cloudy
Light Rain
as of 8:01 PM EDST
Rel. Humidity: 93%
Dew Point: 55°F
Visibility: 9 Miles
Pressure: 29.84 in.
Flight Rule: MVFR
Wind Data
6 MPH
290° West
Cloud Level(s): Scattered at 900ft, Broken at 2500ft, Solid Overcast at 3100ft
Patchy Fog on Tonight Tonight... Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 53. Calm wind.
Clearing on Friday Friday... Cloudy through mid morning, then gradual clearing, with a high near 83. Light south wind becoming southwest 8 to 13 mph in the morning.
80% chance of thunderstorms Friday Night Friday Night... Showers and thunderstorms likely, then showers after 2am. Patchy fog after 2am. Low around 55. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
80% chance of rain Saturday Saturday... Showers, mainly before 2pm. Patchy fog before 9am. High near 68. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
30% chance of rain Saturday Night Saturday Night... A chance of showers before 8pm. Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 46. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Morning Fog on Sunday Sunday... Patchy fog before 9am. Otherwise, mostly sunny, with a high near 70.
Morning Fog on Sunday Night Sunday Night... Patchy fog after 1am. Otherwise, mostly clear, with a low around 42.
Morning Fog on Monday Monday... Areas of fog before 9am. Otherwise, sunny, with a high near 72.
Morning Fog on Monday Night Monday Night... Patchy fog after 2am. Otherwise, mostly clear, with a low around 42.
Morning Fog on Tuesday Tuesday... Patchy fog before 9am. Otherwise, sunny, with a high near 76.
Patchy Fog on Tuesday Night Tuesday Night... Patchy fog. Otherwise, mostly clear, with a low around 47.
Patchy Fog on Wednesday Wednesday... Patchy fog. Otherwise, sunny, with a high near 80.
Patchy Fog on Wednesday Night Wednesday Night... Patchy fog. Otherwise, mostly clear, with a low around 50.
Patchy Fog on Thursday Thursday... Patchy fog. Otherwise, mostly sunny, with a high near 80.
Current Radar Image


Sun Almanac for Williamsburg, Pennsylvania
Sunrise: 06:49 AM
Sunset: 7:45 PM
Civil Sunrise:06:21 AM
Civil Sunset: 8:13 PM
Nautical Sunrise: 05:47 AM
Nautical Sunset: 8:47 PM
Astro Sunrise: 05:13 AM
Astro Sunset: 9:21 PM
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