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

Extreme Heat and Tropical Storm Bertha Impacts

Dangerous heat will expand from the Gulf Coast into the Southern Plains and Desert Southwest through week's end. Additional extreme heat impacting the Pacific Northwest will shift to the northern Plains by the weekend. Tropical Storm Bertha is expected to continue to impact portions of the northern Gulf Coast from the western Florida Panhandle to southeastern Louisiana through tonight. Read More >

Current conditions at

Frederick Municipal Airport (KFDK)

Lat: 39.42°NLon: 77.37°WElev: 269ft.

Fair

64°F

18°C

Humidity 88%
Wind Speed N 3 mph
Barometer 30.06 in
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 23 Jul 2:15 am EDT
Extended Forecast for

Green Valley MD

  • Overnight

    Overnight: Mostly cloudy, with a low around 60. North wind around 7 mph.

    Low: 60 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 79. North wind 3 to 6 mph.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 57. Calm wind.

    Low: 57 °F

    Clear

  • Friday

    Friday: Increasing clouds, with a high near 81. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 81 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 61. Light southeast wind.

    Low: 61 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 65. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 60. North wind around 7 mph.
Thursday
Sunny, with a high near 79. North wind 3 to 6 mph.
Thursday Night
Clear, with a low around 57. Calm wind.
Friday
Increasing clouds, with a high near 81. Calm wind becoming southeast around 6 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 61. Light southeast wind.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
Partly cloudy, with a low around 63.
Sunday
Mostly sunny, with a high near 82.
Sunday Night
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 65. Chance of precipitation is 20%.
Monday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 20%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.
Tuesday
Showers and thunderstorms likely. Partly sunny, with a high near 85. Chance of precipitation is 60%.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Wednesday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Green Valley MD
 39.34°N 77.26°W (Elev. 548 ft)
Last Update:
2:23 am EDT Jul 23, 2026
Forecast Valid:
2am EDT Jul 23, 2026-6pm EDT Jul 29, 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