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

61°F

16°C

Humidity 98%
Wind Speed E 7 mph
Barometer 30.16 in (1021.6 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 24 May 5:55 pm EDT
Extended Forecast for

3 Miles NNW Mount Gretna PA

  • Tonight

    Tonight: Showers, mainly after 4am. Low around 57. East wind 3 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 57 °F

    Slight Chance
    Showers then
    Showers

  • Memorial Day

    Memorial Day: Showers, mainly before 9am. Patchy fog before 9am. High near 77. Calm wind becoming west around 6 mph in the morning. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 77 °F

    Showers and
    Patchy Fog
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 80. Calm wind.

    High: 80 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 61. Calm wind.

    Low: 61 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 7am. Otherwise, partly sunny, with a high near 83.

    High: 83 °F

    Patchy Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers, mainly after 4am. Low around 57. East wind 3 to 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Memorial Day
Showers, mainly before 9am. Patchy fog before 9am. High near 77. Calm wind becoming west around 6 mph in the morning. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Mostly cloudy, with a low around 58. Calm wind.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 80. Calm wind.
Tuesday Night
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 61. Calm wind.
Wednesday
Patchy fog before 7am. Otherwise, partly sunny, with a high near 83.
Wednesday Night
Mostly cloudy, with a low around 60.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Mostly clear, with a low around 54.
Friday
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 53.
Saturday
Mostly sunny, with a high near 75.
Saturday Night
Mostly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Mount Gretna PA
 40.28°N 76.49°W (Elev. 499 ft)
Last Update:
6:03 pm EDT May 24, 2026
Forecast Valid:
6pm EDT May 24, 2026-6pm EDT May 31, 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