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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

Frederick Municipal Airport (KFDK)

Lat: 39.42°NLon: 77.37°WElev: 269ft.

Fair

77°F

25°C

Humidity 79%
Wind Speed Calm
Barometer 30.04 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 16 Aug 8:45 pm EDT
Extended Forecast for

Adamstown MD

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, mostly clear, with a low around 70. Light south wind.

    Low: 70 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, sunny, with a high near 94. Calm wind becoming west around 5 mph in the afternoon.

    High: 94 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 71. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: A slight chance of showers after 2pm. Partly sunny, with a high near 84. North wind around 7 mph. Chance of precipitation is 20%.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers. Mostly cloudy, with a low around 67. East wind around 6 mph becoming calm after midnight. Chance of precipitation is 20%.

    Low: 67 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 20%.

    High: 84 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 40%.

    High: 85 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.

    Low: 67 °F

    Chance
    Showers

Detailed Forecast

Tonight
Patchy fog after 5am. Otherwise, mostly clear, with a low around 70. Light south wind.
Sunday
Patchy fog before 8am. Otherwise, sunny, with a high near 94. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 71. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 20%.
Monday
A slight chance of showers after 2pm. Partly sunny, with a high near 84. North wind around 7 mph. Chance of precipitation is 20%.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 67. East wind around 6 mph becoming calm after midnight. Chance of precipitation is 20%.
Tuesday
A slight chance of showers after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 20%.
Tuesday Night
A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
Wednesday
A chance of showers after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 40%.
Wednesday Night
A chance of showers before 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
Thursday
Partly sunny, with a high near 80.
Thursday Night
Mostly cloudy, with a low around 65.
Friday
Mostly sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Adamstown MD
 39.31°N 77.47°W (Elev. 299 ft)
Last Update:
7:29 pm EDT Aug 16, 2025
Forecast Valid:
9pm EDT Aug 16, 2025-6pm EDT Aug 23, 2025
 
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