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

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

35°F

2°C

Humidity 82%
Wind Speed Vrbl 5 mph
Barometer 30.54 in (1034.5 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 9 Apr 3:56 am EDT
Extended Forecast for

Hummelstown PA

Freeze Warning April 9, 04:53am until April 9, 09:00am
Click here for hazard details and duration
...
  •  
    Freeze Warning April 9, 04:53am until April 9, 09:00am

    NOW until 9:00am Thu

    Freeze Warning

  • Today

    High: 59 °F

    Frost then
    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 37. South wind around 6 mph becoming calm after midnight.

    Low: 37 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 72. Light south wind increasing to 5 to 10 mph in the afternoon.

    High: 72 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers before 2am. Mostly cloudy, with a low around 48. South wind around 7 mph becoming west after midnight. Chance of precipitation is 20%.

    Low: 48 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 63. North wind around 10 mph, with gusts as high as 20 mph.

    High: 63 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

Detailed Forecast

Today
Widespread frost, mainly before 8am. Otherwise, mostly sunny, with a high near 59. Light southeast wind becoming south 5 to 10 mph in the morning.
Tonight
Partly cloudy, with a low around 37. South wind around 6 mph becoming calm after midnight.
Friday
Mostly sunny, with a high near 72. Light south wind increasing to 5 to 10 mph in the afternoon.
Friday Night
A slight chance of showers before 2am. Mostly cloudy, with a low around 48. South wind around 7 mph becoming west after midnight. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 63. North wind around 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Mostly sunny, with a high near 66.
Sunday Night
Mostly cloudy, with a low around 52.
Monday
Mostly cloudy, with a high near 78.
Monday Night
Mostly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
Mostly cloudy, with a low around 62.
Wednesday
Partly sunny, with a high near 84.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hummelstown PA
 40.26°N 76.7°W (Elev. 427 ft)
Last Update:
4:37 am EDT Apr 9, 2026
Forecast Valid:
4am EDT Apr 9, 2026-6pm EDT Apr 15, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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