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Heavy Rain and Flooding Concerns in Hawaii; Severe Weather in the Plains

A storm system is expected to bring strong winds, widespread heavy rainfall, and flooding concerns to the Hawaiian Islands through the weekend. Strong to severe thunderstorms are forecast from the Southern Plains to the Mid-Missouri Valley Thursday afternoon and evening. Large hail and strong winds are the primary threats. Read More >

Hazardous Weather Conditions

Current conditions at

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

Fair

44°F

7°C

Humidity 41%
Wind Speed S 5 mph
Barometer 30.55 in (1034.7 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 8 Apr 11:56 pm EDT
Extended Forecast for

Hummelstown PA

Freeze Warning until April 9, 09:00am
Click here for hazard details and duration
Freeze Warning
  •  
    Freeze Warning until April 9, 09:00am

    NOW until 9:00am Thu

    Freeze Warning

  • Overnight

    Low: 29 °F

    Frost

  • Thursday

    Thursday: Widespread frost before 9am. Otherwise, mostly sunny, with a high near 59. Light southeast wind becoming south 5 to 10 mph in the morning.

    High: 59 °F

    Frost then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Areas of frost after 4am. Otherwise, mostly clear, with a low around 37. South wind around 6 mph becoming calm after midnight.

    Low: 37 °F

    Mostly Clear
    then Areas
    Frost

  • Friday

    Friday: Patchy frost before 7am. Otherwise, sunny, with a high near 72. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 72 °F

    Patchy Frost
    then Sunny

  • Friday Night

    Friday Night: A chance of showers, mainly before 2am. Mostly cloudy, with a low around 48. South wind around 6 mph becoming west after midnight. Chance of precipitation is 30%.

    Low: 48 °F

    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

Detailed Forecast

Overnight
Widespread frost after 2am. Otherwise, mostly clear, with a low around 29. Southeast wind 3 to 6 mph.
Thursday
Widespread frost before 9am. Otherwise, mostly sunny, with a high near 59. Light southeast wind becoming south 5 to 10 mph in the morning.
Thursday Night
Areas of frost after 4am. Otherwise, mostly clear, with a low around 37. South wind around 6 mph becoming calm after midnight.
Friday
Patchy frost before 7am. Otherwise, sunny, with a high near 72. Calm wind becoming south 5 to 9 mph in the afternoon.
Friday Night
A chance of showers, mainly before 2am. Mostly cloudy, with a low around 48. South wind around 6 mph becoming west after midnight. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 62.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Mostly sunny, with a high near 65.
Sunday Night
Mostly cloudy, with a low around 51.
Monday
Mostly cloudy, with a high near 79.
Monday Night
Mostly cloudy, with a low around 61.
Tuesday
Partly sunny, with a high near 86.
Tuesday Night
Mostly cloudy, with a low around 64.
Wednesday
A chance of showers. Partly sunny, with a high near 85. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hummelstown PA
 40.26°N 76.7°W (Elev. 427 ft)
Last Update:
10:02 pm EDT Apr 8, 2026
Forecast Valid:
12am EDT Apr 9, 2026-6pm EDT Apr 15, 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