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

48°F

9°C

Humidity 78%
Wind Speed Calm
Barometer 29.64 in (1003.9 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 12 Nov 2:55 am EST
Extended Forecast for

2 Miles WNW Mount Gretna PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 48. Southeast wind around 8 mph.

    Low: 48 °F

    Mostly Cloudy

  • Thursday

    Thursday: Rain and possibly a thunderstorm before 2pm, then a chance of rain and thunderstorms, mainly between 2pm and 4pm. High near 54. East wind 6 to 8 mph becoming northwest in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 54 °F

    Rain then
    Rain Likely

  • Thursday Night

    Thursday Night: A chance of rain, mainly after 2am. Mostly cloudy, with a low around 39. North wind 15 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Chance Rain

  • Friday

    Friday: Rain, mainly before 1pm, then a chance of showers after 1pm. High near 43. Northwest wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 43 °F

    Rain

  • Friday Night

    Friday Night: A slight chance of rain and snow showers before 10pm, then a slight chance of snow showers. Mostly cloudy, with a low around 32. Northwest wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    Low: 32 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 46.

    High: 46 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 48. Southeast wind around 8 mph.
Thursday
Rain and possibly a thunderstorm before 2pm, then a chance of rain and thunderstorms, mainly between 2pm and 4pm. High near 54. East wind 6 to 8 mph becoming northwest in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A chance of rain, mainly after 2am. Mostly cloudy, with a low around 39. North wind 15 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain, mainly before 1pm, then a chance of showers after 1pm. High near 43. Northwest wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A slight chance of rain and snow showers before 10pm, then a slight chance of snow showers. Mostly cloudy, with a low around 32. Northwest wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 46.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
Mostly sunny, with a high near 49.
Sunday Night
Partly cloudy, with a low around 34.
Monday
Mostly sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 30.
Tuesday
Sunny, with a high near 51.
Tuesday Night
Mostly clear, with a low around 30.
Wednesday
Sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Mount Gretna PA
 40.26°N 76.5°W (Elev. 682 ft)
Last Update:
1:21 am EST Nov 12, 2026
Forecast Valid:
3am EST Nov 12, 2026-6pm EST Nov 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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