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Fire Weather Issues; Pacific System Moving Inland

Dry fuels, strong winds and dry weather will continue to bring elevated to critical fire weather conditions to the areas of the Plains, Midwest and Southeast today. A Pacific storm system will bring low elevation rain and heavy high elevation mountain snow to California through early week, expanding into the Pacific Northwest, Great Basin, and southern California on Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

Partly Cloudy

47°F

8°C

Humidity 44%
Wind Speed NW 16 mph
Barometer 30.20 in (1023.0 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 20 Apr 11:56 am EDT
Extended Forecast for

Hallam PA

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

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 50. Northwest wind around 14 mph, with gusts as high as 24 mph.

    High: 50 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 30. Northwest wind 5 to 8 mph becoming calm after midnight.

    Low: 30 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 56. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 56 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 2am. Mostly cloudy, with a low around 45. South wind around 10 mph. Chance of precipitation is 40%.

    Low: 45 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers. Partly sunny, with a high near 68. South wind around 6 mph becoming west in the afternoon. Chance of precipitation is 40%.

    High: 68 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 50. Northwest wind around 14 mph, with gusts as high as 24 mph.
Tonight
Mostly clear, with a low around 30. Northwest wind 5 to 8 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 56. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
A chance of showers after 2am. Mostly cloudy, with a low around 45. South wind around 10 mph. Chance of precipitation is 40%.
Wednesday
A chance of showers. Partly sunny, with a high near 68. South wind around 6 mph becoming west in the afternoon. Chance of precipitation is 40%.
Wednesday Night
Partly cloudy, with a low around 46.
Thursday
Sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 49.
Friday
Mostly sunny, with a high near 73.
Friday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.
Saturday
Showers likely. Partly sunny, with a high near 60. 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. Partly sunny, with a high near 62. Chance of precipitation is 40%.
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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:
11:52 am EDT Apr 20, 2026
Forecast Valid:
12pm EDT Apr 20, 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