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

82°F

28°C

Humidity 56%
Wind Speed W 9 mph
Barometer 29.88 in (1011.9 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 14 Oct 3:55 pm EDT
Extended Forecast for

Grantville PA

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms, mainly before 5pm. Partly sunny, with a high near 82. West wind around 9 mph. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 53. North wind 7 to 9 mph.

    Low: 53 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 65. Light and variable wind becoming northeast around 5 mph.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers. Low around 57. Southeast wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 57 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 80. South wind 8 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Chance
    Showers then
    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 45. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 45 °F

    Showers then
    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Areas of frost after 1am. Otherwise, clear, with a low around 35.

    Low: 35 °F

    Mostly Clear
    then Areas
    Frost

  • Sunday

    Sunday: Areas of frost before 9am. Otherwise, sunny, with a high near 58.

    High: 58 °F

    Areas Frost
    then Sunny

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, mainly before 5pm. Partly sunny, with a high near 82. West wind around 9 mph. Chance of precipitation is 30%.
Tonight
Mostly cloudy, with a low around 53. North wind 7 to 9 mph.
Thursday
Mostly sunny, with a high near 65. Light and variable wind becoming northeast around 5 mph.
Thursday Night
Showers. Low around 57. Southeast wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 80. South wind 8 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 45. 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 53.
Saturday Night
Areas of frost after 1am. Otherwise, clear, with a low around 35.
Sunday
Areas of frost before 9am. Otherwise, sunny, with a high near 58.
Sunday Night
Mostly clear, with a low around 37.
Monday
Sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Mostly sunny, with a high near 65.
Tuesday Night
Partly cloudy, with a low around 45.
Wednesday
Sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grantville PA
 40.39°N 76.68°W (Elev. 499 ft)
Last Update:
2:21 pm EDT Oct 14, 2026
Forecast Valid:
4pm EDT Oct 14, 2026-6pm EDT Oct 21, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation