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

Heavy Rain Return to the Southwest U.S.; Potential Atlantic Tropical System Interaction

Heavy to excessive rainfall from monsoon thunderstorms may bring isolated flash and urban flooding to the Desert Southwest into Sunday. The tropical wave (AL94) continues to bring heavy rainfall to Puerto Rico and the US Virgin Islands. The close proximity of Tropical Storm Humberto and AL94 could lead to interaction between them, but details of their track and intensity forecasts remain uncertain Read More >

Hazardous Weather Conditions

Current conditions at

Hagerstown, Washington County Regional Airport (KHGR)

Lat: 39.71°NLon: 77.73°WElev: 702ft.

Fair

73°F

23°C

Humidity 76%
Wind Speed W 3 mph
Barometer 29.81 in (1010.0 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 25 Sep 7:53 pm EDT
Extended Forecast for

Williamsport MD

  • Tonight

    Tonight: A slight chance of showers before 10pm. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 62. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 62 °F

    Slight Chance
    Showers then
    Patchy Fog

  • Friday

    Friday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 81. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 81 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 78. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 78 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers. Cloudy, with a low around 62. Calm wind. Chance of precipitation is 40%.

    Low: 62 °F

    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 20%.

    High: 80 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of showers after 8am. Mostly cloudy, with a high near 78. Chance of precipitation is 40%.

    High: 78 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers. Cloudy, with a low around 62. Chance of precipitation is 40%.

    Low: 62 °F

    Chance
    Showers

Detailed Forecast

Tonight
A slight chance of showers before 10pm. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 62. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Friday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 81. Calm wind becoming northwest around 5 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 60. Calm wind.
Saturday
A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 78. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Cloudy, with a low around 62. Calm wind. Chance of precipitation is 40%.
Sunday
A slight chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 60.
Monday
A chance of showers after 8am. Mostly cloudy, with a high near 78. Chance of precipitation is 40%.
Monday Night
A chance of showers. Cloudy, with a low around 62. Chance of precipitation is 40%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 78. Chance of precipitation is 40%.
Tuesday Night
Mostly cloudy, with a low around 57.
Wednesday
Mostly sunny, with a high near 72.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
Mostly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Williamsport MD
 39.59°N 77.83°W (Elev. 348 ft)
Last Update:
7:29 pm EDT Sep 25, 2025
Forecast Valid:
8pm EDT Sep 25, 2025-6pm EDT Oct 2, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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