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

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

50°F

10°C

Humidity 29%
Wind Speed NW 6 mph
Barometer 30.26 in (1026.3 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 24 Dec 3:56 pm EST
Extended Forecast for

Lisbon MD

  • Tonight

    Tonight: Mostly cloudy, with a low around 33. Calm wind becoming southeast around 5 mph after midnight.

    Low: 33 °F

    Mostly Cloudy

  • Christmas Day

    Christmas Day: A chance of showers, mainly before 10am. Partly sunny, with a high near 51. South wind around 8 mph becoming northwest in the afternoon. Chance of precipitation is 30%.

    High: 51 °F

    Chance
    Showers then
    Partly Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 26. North wind around 7 mph.

    Low: 26 °F

    Increasing
    Clouds

  • Friday

    Friday: A slight chance of snow, freezing rain, and sleet before 10am, then a slight chance of drizzle, freezing rain, and sleet between 10am and 1pm, then freezing rain and sleet after 1pm. High near 33. Northeast wind 5 to 8 mph becoming southeast in the afternoon. Chance of precipitation is 80%. New ice accumulation of less than a 0.1 of an inch possible. New snow and sleet accumulation of less than a half inch possible.

    High: 33 °F

    Slight Chance
    Wintry Mix
    then Wintry
    Mix

  • Friday Night

    Friday Night: Freezing rain and sleet, becoming all freezing rain after 10pm. Low around 29. Southeast wind 5 to 8 mph. Chance of precipitation is 90%. New sleet accumulation of less than a half inch possible.

    Low: 29 °F

    Wintry Mix
    then Freezing
    Rain

  • Saturday

    Saturday: A chance of drizzle or freezing rain before 1pm. Cloudy, with a high near 38. Chance of precipitation is 30%.

    High: 38 °F

    Chance
    Drizzle/Freezing
    Rain

  • Saturday Night

    Saturday Night: Cloudy, with a low around 30.

    Low: 30 °F

    Cloudy

  • Sunday

    Sunday: A chance of rain. Cloudy, with a high near 43. Chance of precipitation is 50%.

    High: 43 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Rain likely. Cloudy, with a low around 36. Chance of precipitation is 70%.

    Low: 36 °F

    Rain Likely

Detailed Forecast

Tonight
Mostly cloudy, with a low around 33. Calm wind becoming southeast around 5 mph after midnight.
Christmas Day
A chance of showers, mainly before 10am. Partly sunny, with a high near 51. South wind around 8 mph becoming northwest in the afternoon. Chance of precipitation is 30%.
Thursday Night
Increasing clouds, with a low around 26. North wind around 7 mph.
Friday
A slight chance of snow, freezing rain, and sleet before 10am, then a slight chance of drizzle, freezing rain, and sleet between 10am and 1pm, then freezing rain and sleet after 1pm. High near 33. Northeast wind 5 to 8 mph becoming southeast in the afternoon. Chance of precipitation is 80%. New ice accumulation of less than a 0.1 of an inch possible. New snow and sleet accumulation of less than a half inch possible.
Friday Night
Freezing rain and sleet, becoming all freezing rain after 10pm. Low around 29. Southeast wind 5 to 8 mph. Chance of precipitation is 90%. New sleet accumulation of less than a half inch possible.
Saturday
A chance of drizzle or freezing rain before 1pm. Cloudy, with a high near 38. Chance of precipitation is 30%.
Saturday Night
Cloudy, with a low around 30.
Sunday
A chance of rain. Cloudy, with a high near 43. Chance of precipitation is 50%.
Sunday Night
Rain likely. Cloudy, with a low around 36. Chance of precipitation is 70%.
Monday
A chance of rain before 1pm. Partly sunny, with a high near 47. Breezy. Chance of precipitation is 40%.
Monday Night
Partly cloudy, with a low around 22.
Tuesday
Mostly sunny, with a high near 31.
Tuesday Night
Partly cloudy, with a low around 21.
Wednesday
Mostly sunny, with a high near 36.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lisbon MD
 39.34°N 77.09°W (Elev. 699 ft)
Last Update:
3:53 pm EST Dec 24, 2025
Forecast Valid:
4pm EST Dec 24, 2025-6pm EST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation