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

Autumn Temperatures for Eastern Third of the Country; Super Typhoon Approaching Guam

Cooler and less humid conditions for the eastern third of the nation as a cold slides off the east coast. Combination of dry and breezy conditions may result in spread of wildfires across the lower Mississippi Valley. In addition, fire weather conditions linger into portions of Southern California. For Guam, a super typhoon is approaching. Read More >

Hazardous Weather Conditions

Current conditions at

Frederick Municipal Airport (KFDK)

Lat: 39.42°NLon: 77.37°WElev: 269ft.

Mostly Cloudy

54°F

12°C

Humidity 63%
Wind Speed N 13 G 21 mph
Barometer 30.24 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 17 Oct 10:52 am EDT
Extended Forecast for

Green Valley MD

Freeze Warning October 18, 01:00am until October 18, 09:00am
Click here for hazard details and duration
Freeze Warning

  • Today

    Today: Cloudy early, then gradual clearing, with a high near 53. Breezy, with a north wind 18 to 20 mph, with gusts as high as 29 mph.

    High: 53 °F

    Becoming
    Sunny and
    Breezy

  • Tonight

    Tonight: Widespread frost, mainly after 3am. Otherwise, clear, with a low around 32. North wind 6 to 8 mph.

    Low: 32 °F

    Clear then
    Frost

  • Sunday

    Sunday: Widespread frost before 9am. Otherwise, sunny, with a high near 57. North wind 3 to 6 mph.

    High: 57 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 60. North wind 5 to 7 mph.

    High: 60 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

Detailed Forecast

Today
Cloudy early, then gradual clearing, with a high near 53. Breezy, with a north wind 18 to 20 mph, with gusts as high as 29 mph.
Tonight
Widespread frost, mainly after 3am. Otherwise, clear, with a low around 32. North wind 6 to 8 mph.
Sunday
Widespread frost before 9am. Otherwise, sunny, with a high near 57. North wind 3 to 6 mph.
Sunday Night
Mostly clear, with a low around 36. Calm wind.
Monday
Sunny, with a high near 60. North wind 5 to 7 mph.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Mostly sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Mostly sunny, with a high near 62.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 65.
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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:
10:53 am EDT Oct 17, 2026
Forecast Valid:
11am EDT Oct 17, 2026-6pm EDT Oct 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation