National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Muir Army Air Field / Indiantown (KMUI)

Lat: 40.44°NLon: 76.56°WElev: 476ft.

Fair

63°F

17°C

Humidity 90%
Wind Speed Calm
Barometer 30.05 in (1017.7 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 25 Aug 10:55 pm EDT
Extended Forecast for

Williamstown PA

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 83. Calm wind becoming south around 5 mph in the afternoon.

    High: 83 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 64. Southeast wind 3 to 6 mph.

    Low: 64 °F

    Partly Cloudy

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 85. South wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Mostly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 62. Light south wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 62 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 55. Calm wind.
Wednesday
Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 83. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 64. Southeast wind 3 to 6 mph.
Thursday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 85. South wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 62. Light south wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Friday
A chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Partly cloudy, with a low around 59.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Mostly sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 63.
Monday
Mostly sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 66.
Tuesday
Partly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Williamstown PA
 40.58°N 76.61°W (Elev. 699 ft)
Last Update:
9:26 pm EDT Aug 25, 2026
Forecast Valid:
11pm EDT Aug 25, 2026-6pm EDT Sep 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation