National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Muir Army Air Field / Indiantown (KMUI)

Lat: 40.44°NLon: 76.56°WElev: 476ft.

Fair

51°F

11°C

Humidity 25%
Wind Speed W 15 G 21 mph
Barometer 30.01 in (1016.7 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 19 Apr 7:55 pm EDT
Extended Forecast for

Annville PA

Freeze Watch April 21, 12:00am until April 21, 09:00am
Click here for hazard details and duration
Freeze Watch

  • Tonight

    Tonight: A slight chance of showers after 3am. Increasing clouds, with a low around 37. West wind 5 to 9 mph becoming light and variable. Chance of precipitation is 20%.

    Low: 37 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 50. Northwest wind 11 to 15 mph, with gusts as high as 24 mph.

    High: 50 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Widespread frost after 3am. Otherwise, mostly clear, with a low around 29. Northwest wind 5 to 8 mph becoming calm after midnight.

    Low: 29 °F

    Partly Cloudy
    then Frost

  • Tuesday

    Tuesday: Sunny, with a high near 56. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 56 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 2am. Mostly cloudy, with a low around 42. South wind around 6 mph. Chance of precipitation is 30%.

    Low: 42 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers before 2pm. Partly sunny, with a high near 68. Chance of precipitation is 30%.

    High: 68 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers after 3am. Increasing clouds, with a low around 37. West wind 5 to 9 mph becoming light and variable. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 50. Northwest wind 11 to 15 mph, with gusts as high as 24 mph.
Monday Night
Widespread frost after 3am. Otherwise, mostly clear, with a low around 29. Northwest wind 5 to 8 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 56. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tuesday Night
A chance of showers after 2am. Mostly cloudy, with a low around 42. South wind around 6 mph. Chance of precipitation is 30%.
Wednesday
A chance of showers before 2pm. Partly sunny, with a high near 68. Chance of precipitation is 30%.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Sunny, with a high near 74.
Thursday Night
Mostly clear, with a low around 49.
Friday
Mostly sunny, with a high near 75.
Friday Night
A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.
Saturday
Showers likely. Mostly cloudy, with a high near 66. Chance of precipitation is 60%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Sunday
A chance of showers. Mostly cloudy, with a high near 62. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Annville PA
 40.33°N 76.51°W (Elev. 404 ft)
Last Update:
8:06 pm EDT Apr 19, 2026
Forecast Valid:
8pm EDT Apr 19, 2026-6pm EDT Apr 26, 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