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.

Partly Cloudy

67°F

19°C

Humidity 88%
Wind Speed Calm
Barometer 29.86 in (1011.4 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 13 Oct 7:55 pm EDT
Extended Forecast for

Williamstown PA

  • Tonight

    Tonight: Mostly clear, with a low around 64. West wind 5 to 7 mph.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers. Partly sunny, with a high near 80. West wind 5 to 7 mph. Chance of precipitation is 20%.

    High: 80 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 51. North wind around 7 mph.

    Low: 51 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 68. North wind around 5 mph becoming calm in the morning.

    High: 68 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers. Low around 54. Light southeast wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 54 °F

    Showers
    Likely then
    Showers

  • Friday

    Friday: Showers, mainly after 2pm. High near 74. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 74 °F

    Showers

  • Friday Night

    Friday Night: Showers before 8pm. Low around 39. Chance of precipitation is 80%.

    Low: 39 °F

    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

  • Saturday Night

    Saturday Night: Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 32.

    Low: 32 °F

    Frost

Detailed Forecast

Tonight
Mostly clear, with a low around 64. West wind 5 to 7 mph.
Wednesday
A slight chance of showers. Partly sunny, with a high near 80. West wind 5 to 7 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 51. North wind around 7 mph.
Thursday
Mostly sunny, with a high near 68. North wind around 5 mph becoming calm in the morning.
Thursday Night
Showers. Low around 54. Light southeast wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Showers, mainly after 2pm. High near 74. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Showers before 8pm. Low around 39. Chance of precipitation is 80%.
Saturday
Sunny, with a high near 51.
Saturday Night
Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 32.
Sunday
Widespread frost before 9am. Otherwise, sunny, with a high near 58.
Sunday Night
Mostly clear, with a low around 36.
Monday
Areas of frost. Otherwise, mostly sunny, with a high near 62.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 65.
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 76.61°W (Elev. 699 ft)
Last Update:
8:05 pm EDT Oct 13, 2026
Forecast Valid:
8pm EDT Oct 13, 2026-6pm EDT Oct 20, 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