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 93%
Wind Speed Calm
Barometer 30.03 in (1017.0 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 22 Aug 1:55 am EDT
Extended Forecast for

Jonestown PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 80. Light east wind becoming southeast 5 to 9 mph in the morning. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers and thunderstorms before 4am, then showers likely. Low around 63. East wind 3 to 7 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Showers

  • Sunday

    Sunday: A chance of showers, mainly before 7am. Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 80. West wind 5 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 80 °F

    Chance
    Showers and
    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 58. West wind 5 to 9 mph becoming light after midnight.

    Low: 58 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 60. Calm wind.
Saturday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 80. Light east wind becoming southeast 5 to 9 mph in the morning. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms before 4am, then showers likely. Low around 63. East wind 3 to 7 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers, mainly before 7am. Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 80. West wind 5 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Mostly clear, with a low around 58. West wind 5 to 9 mph becoming light after midnight.
Monday
Sunny, with a high near 77.
Monday Night
Mostly clear, with a low around 57.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
Showers likely. Partly sunny, with a high near 83. Chance of precipitation is 60%.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Friday
A chance of showers. Partly sunny, with a high near 84. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Jonestown PA
 40.41°N 76.5°W (Elev. 423 ft)
Last Update:
2:21 am EDT Aug 22, 2026
Forecast Valid:
2am EDT Aug 22, 2026-6pm EDT Aug 28, 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