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.

Mostly Cloudy

74°F

23°C

Humidity 47%
Wind Speed W 7 mph
Barometer 29.76 in (1007.7 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 19 Jun 10:55 am EDT
Extended Forecast for

Williamstown PA

  • Juneteenth

    Juneteenth: Scattered showers after 5pm. Mostly sunny, with a high near 81. Northwest wind 8 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    High: 81 °F

    Scattered
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 57. West wind around 9 mph, with gusts as high as 23 mph.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 80. Northwest wind around 10 mph, with gusts as high as 25 mph.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 56. Northwest wind around 6 mph becoming calm in the evening.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 83. West wind 3 to 7 mph.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Partly Cloudy
    then Showers
    Likely

  • Monday

    Monday: Showers, with thunderstorms also possible after 2pm. High near 79. Chance of precipitation is 90%.

    High: 79 °F

    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 8pm, then showers likely between 8pm and 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.

    Low: 58 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Juneteenth
Scattered showers after 5pm. Mostly sunny, with a high near 81. Northwest wind 8 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Tonight
Mostly clear, with a low around 57. West wind around 9 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 80. Northwest wind around 10 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 56. Northwest wind around 6 mph becoming calm in the evening.
Sunday
Sunny, with a high near 83. West wind 3 to 7 mph.
Sunday Night
Showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Showers, with thunderstorms also possible after 2pm. High near 79. Chance of precipitation is 90%.
Monday Night
Showers likely and possibly a thunderstorm before 8pm, then showers likely between 8pm and 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 57.
Wednesday
Mostly sunny, with a high near 82.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 59. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Williamstown PA
 40.58°N 76.61°W (Elev. 699 ft)
Last Update:
8:06 am EDT Jun 19, 2026
Forecast Valid:
11am EDT Jun 19, 2026-6pm EDT Jun 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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