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

62°F

17°C

Humidity 54%
Wind Speed Calm
Barometer 29.94 in (1014.3 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 9 Mar 7:55 pm EDT
Extended Forecast for

Williamstown PA

  • Tonight

    Tonight: Mostly clear, with a low around 45. Light southwest wind.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 71. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 71 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 72. Light southeast wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 72 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 39. South wind 13 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 39 °F

    Showers

  • Thursday

    Thursday: A chance of rain and snow showers before 2pm, then a slight chance of snow showers. Mostly cloudy, with a high near 45. Breezy. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 45 °F

    Chance
    Rain/Snow and
    Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Friday

    Friday: A chance of rain and snow showers after 2pm. Partly sunny, with a high near 46. Chance of precipitation is 30%.

    High: 46 °F

    Mostly Sunny
    then Chance
    Rain/Snow

  • Friday Night

    Friday Night: A chance of rain and snow showers before 8pm. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.

    Low: 32 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 45. Light southwest wind.
Tuesday
Sunny, with a high near 71. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 54. Calm wind.
Wednesday
Showers likely, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 72. Light southeast wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm. Low around 39. South wind 13 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of rain and snow showers before 2pm, then a slight chance of snow showers. Mostly cloudy, with a high near 45. Breezy. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Partly cloudy, with a low around 26.
Friday
A chance of rain and snow showers after 2pm. Partly sunny, with a high near 46. Chance of precipitation is 30%.
Friday Night
A chance of rain and snow showers before 8pm. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 46.
Saturday Night
Mostly cloudy, with a low around 34.
Sunday
A chance of showers. Mostly cloudy, with a high near 56. Chance of precipitation is 30%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 36. Breezy. Chance of precipitation is 70%.
Monday
Rain and snow showers likely. Mostly cloudy, with a high near 45. Chance of precipitation is 60%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Williamstown PA
 40.58°N 76.64°W (Elev. 1220 ft)
Last Update:
2:26 pm EDT Mar 9, 2026
Forecast Valid:
8pm EDT Mar 9, 2026-6pm EDT Mar 16, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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