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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Sunday could bring areas of flooding to parts of the upper Midwest, central Great Lakes, southern New England and Virginia/North Carolina tidewater region. Read More >

Current conditions at

Camp David (KRSP)

Lat: 39.65°NLon: 77.47°WElev: 1841ft.

Fair

71°F

22°C

Humidity 81%
Wind Speed NA
Barometer 30.18 in (1030.7 mb)
Dewpoint 65°F (18°C)
Visibility 9.00 mi
Last update 17 Sep 7:54 pm EDT
Extended Forecast for

Thurmont MD

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 69. Light and variable wind. Chance of precipitation is 30%.

    Low: 69 °F

    Scattered
    Showers then
    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 81. North wind 5 to 8 mph.

    High: 81 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58. Northeast wind 5 to 7 mph.

    Low: 58 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 76. Northeast wind around 6 mph becoming light and variable in the morning.

    High: 76 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers, mainly after 2am. Mostly cloudy, with a low around 65. South wind 3 to 8 mph. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 79. Chance of precipitation is 90%.

    High: 79 °F

    Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 2am, then a slight chance of showers. Low around 62. Chance of precipitation is 80%.

    Low: 62 °F

    Showers

  • Monday

    Monday: A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 70. Chance of precipitation is 50%.

    High: 70 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.

    Low: 59 °F

    Showers
    Likely

Detailed Forecast

Tonight
Scattered showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 69. Light and variable wind. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 81. North wind 5 to 8 mph.
Friday Night
Partly cloudy, with a low around 58. Northeast wind 5 to 7 mph.
Saturday
Partly sunny, with a high near 76. Northeast wind around 6 mph becoming light and variable in the morning.
Saturday Night
A chance of showers, mainly after 2am. Mostly cloudy, with a low around 65. South wind 3 to 8 mph. Chance of precipitation is 30%.
Sunday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 79. Chance of precipitation is 90%.
Sunday Night
Showers and possibly a thunderstorm before 2am, then a slight chance of showers. Low around 62. Chance of precipitation is 80%.
Monday
A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 70. Chance of precipitation is 50%.
Monday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Tuesday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 61. Chance of precipitation is 60%.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 59. Chance of precipitation is 40%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Thursday
A chance of showers. Partly sunny, with a high near 63. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Thurmont MD
 39.62°N 77.42°W (Elev. 600 ft)
Last Update:
7:53 pm EDT Sep 17, 2026
Forecast Valid:
8pm EDT Sep 17, 2026-6pm EDT Sep 24, 2026
 
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