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

68°F

20°C

Humidity 55%
Wind Speed W 9 mph
Barometer 29.77 in (1008.0 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 19 Jun 7:55 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

    Mostly Sunny
    then
    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:
8am EDT Jun 19, 2026-6pm EDT Jun 25, 2026
 
Forecast Discussion
 
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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