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

Strong to Severe Thunderstorms Continue Tonight in the East; Early Heat Wave in the West

Scattered strong to severe storms with damaging winds and potentially a tornado or two are expected tonight from the coastal Carolinas into the Mid-Atlantic states. An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Read More >

Hazardous Weather Conditions

Current conditions at

Frederick Municipal Airport (KFDK)

Lat: 39.42°NLon: 77.37°WElev: 269ft.

Mostly Cloudy

30°F

-1°C

Humidity 61%
Wind Speed W 9 mph
Barometer 29.86 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 17 Mar 5:55 am EDT
Extended Forecast for

Green Valley MD

  • Today

    Today: Mostly sunny, with a high near 37. West wind 14 to 18 mph, with gusts as high as 30 mph.

    High: 37 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 22. West wind 6 to 11 mph becoming light northwest after midnight. Winds could gust as high as 20 mph.

    Low: 22 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 39. Calm wind becoming south around 6 mph in the afternoon.

    High: 39 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 28. Southeast wind around 6 mph.

    Low: 28 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 51. South wind around 6 mph.

    High: 51 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A slight chance of rain. Partly cloudy, with a low around 35. Chance of precipitation is 20%.

    Low: 35 °F

    Slight Chance
    Rain

  • Friday

    Friday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of rain. Mostly cloudy, with a low around 43. Chance of precipitation is 30%.

    Low: 43 °F

    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 59.

    High: 59 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 37. West wind 14 to 18 mph, with gusts as high as 30 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 22. West wind 6 to 11 mph becoming light northwest after midnight. Winds could gust as high as 20 mph.
Wednesday
Mostly sunny, with a high near 39. Calm wind becoming south around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 28. Southeast wind around 6 mph.
Thursday
Partly sunny, with a high near 51. South wind around 6 mph.
Thursday Night
A slight chance of rain. Partly cloudy, with a low around 35. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 57.
Friday Night
A chance of rain. Mostly cloudy, with a low around 43. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 59.
Saturday Night
Mostly cloudy, with a low around 43.
Sunday
Mostly cloudy, with a high near 64.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 38. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Green Valley MD
 39.33°N 77.24°W (Elev. 607 ft)
Last Update:
4:53 am EDT Mar 17, 2026
Forecast Valid:
6am EDT Mar 17, 2026-6pm EDT Mar 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation