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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Current conditions at

Camp David (KRSP)

Lat: 39.65°NLon: 77.47°WElev: 1841ft.

A Few Clouds

76°F

24°C

Humidity 69%
Wind Speed S 8 mph
Barometer 29.80 in (1008.2 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 17 Jun 5:54 pm EDT
Extended Forecast for

3 Miles NW Thurmont MD

  • Tonight

    Tonight: Increasing clouds, with a low around 67. Light and variable wind becoming south 5 to 10 mph after midnight. Winds could gust as high as 25 mph.

    Low: 67 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly between 1pm and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 87. Breezy, with a west wind 15 to 22 mph, with gusts as high as 36 mph. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 64. West wind 5 to 11 mph, with gusts as high as 24 mph.

    Low: 64 °F

    Mostly Cloudy

  • Juneteenth

    Juneteenth: Mostly cloudy, then gradually becoming sunny, with a high near 79. West wind 6 to 11 mph, with gusts as high as 22 mph.

    High: 79 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 60. Northwest wind 5 to 9 mph, with gusts as high as 22 mph.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely after 2am. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.

    Low: 62 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Tonight
Increasing clouds, with a low around 67. Light and variable wind becoming south 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Thursday
A chance of showers and thunderstorms, mainly between 1pm and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 87. Breezy, with a west wind 15 to 22 mph, with gusts as high as 36 mph. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 64. West wind 5 to 11 mph, with gusts as high as 24 mph.
Juneteenth
Mostly cloudy, then gradually becoming sunny, with a high near 79. West wind 6 to 11 mph, with gusts as high as 22 mph.
Friday Night
Mostly clear, with a low around 60. Northwest wind 5 to 9 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 78.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
A chance of showers and thunderstorms, then showers likely after 2am. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Monday
Showers, with thunderstorms also possible after 2pm. High near 78. Chance of precipitation is 80%.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Tuesday
Sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Thurmont MD
 39.67°N 77.44°W (Elev. 974 ft)
Last Update:
4:53 pm EDT Jun 17, 2026
Forecast Valid:
6pm EDT Jun 17, 2026-6pm EDT Jun 24, 2026
 
Forecast Discussion
 
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Additional Resources

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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