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.

Overcast

72°F

22°C

Humidity 65%
Wind Speed N 9 mph
Barometer 30.00 in (1015.9 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 14 Oct 10:55 pm EDT
Extended Forecast for

Williamstown PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 50. North wind around 7 mph, with gusts as high as 20 mph.

    Low: 50 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 65. Northeast wind around 5 mph becoming calm in the morning.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers, mainly after 2am. Low around 53. Light southeast wind increasing to 5 to 9 mph in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 78. South wind around 9 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 2am. Low around 40. Northwest wind 11 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 40 °F

    Showers then
    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Widespread frost, mainly after 3am. Otherwise, clear, with a low around 31.

    Low: 31 °F

    Frost

  • Sunday

    Sunday: Widespread frost before 9am. Otherwise, sunny, with a high near 57.

    High: 57 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 34.

    Low: 34 °F

    Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 50. North wind around 7 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 65. Northeast wind around 5 mph becoming calm in the morning.
Thursday Night
Showers, mainly after 2am. Low around 53. Light southeast wind increasing to 5 to 9 mph in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 78. South wind around 9 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 2am. Low around 40. Northwest wind 11 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 51.
Saturday Night
Widespread frost, mainly after 3am. Otherwise, clear, with a low around 31.
Sunday
Widespread frost before 9am. Otherwise, sunny, with a high near 57.
Sunday Night
Clear, with a low around 34.
Monday
Areas of frost before 8am. Otherwise, sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Mostly sunny, with a high near 65.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
Sunny, with a high near 65.
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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 pm EDT Oct 14, 2026
Forecast Valid:
11pm EDT Oct 14, 2026-6pm EDT Oct 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation