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 this 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.

Mostly Cloudy

56°F

13°C

Humidity 39%
Wind Speed SE 8 mph
Barometer 30.47 in (1032.0 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 9 Apr 1:56 pm EDT
Extended Forecast for

Hallam PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 57. South wind around 9 mph.

    High: 57 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 39. Southeast wind 5 to 7 mph.

    Low: 39 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 70. Light south wind increasing to 5 to 9 mph in the morning.

    High: 70 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 48. South wind 7 to 10 mph becoming west after midnight.

    Low: 48 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 62. North wind 8 to 13 mph, with gusts as high as 21 mph.

    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 64.

    High: 64 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 77.

    High: 77 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 57. South wind around 9 mph.
Tonight
Mostly clear, with a low around 39. Southeast wind 5 to 7 mph.
Friday
Mostly sunny, with a high near 70. Light south wind increasing to 5 to 9 mph in the morning.
Friday Night
Increasing clouds, with a low around 48. South wind 7 to 10 mph becoming west after midnight.
Saturday
Sunny, with a high near 62. North wind 8 to 13 mph, with gusts as high as 21 mph.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Mostly sunny, with a high near 64.
Sunday Night
Mostly cloudy, with a low around 53.
Monday
Mostly cloudy, with a high near 77.
Monday Night
Mostly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 82.
Tuesday Night
Partly cloudy, with a low around 62.
Wednesday
Partly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hallam PA
 40.02°N 76.6°W (Elev. 522 ft)
Last Update:
2:21 pm EDT Apr 9, 2026
Forecast Valid:
2pm 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