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.

Overcast

33°F

1°C

Humidity 64%
Wind Speed NW 14 G 21 mph
Barometer 29.93 in (1015.5 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 23 Feb 7:56 pm EST
Extended Forecast for

Lisbon MD

  • Tonight

    Tonight: Mostly cloudy, with a low around 20. Northwest wind 14 to 18 mph, with gusts as high as 29 mph.

    Low: 20 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 35. Northwest wind 7 to 13 mph, with gusts as high as 23 mph.

    High: 35 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of snow after 1am. Increasing clouds, with a low around 27. Light south wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 40%.

    Low: 27 °F

    Mostly Cloudy
    then Chance
    Snow

  • Wednesday

    Wednesday: A slight chance of snow before 10am, then a slight chance of rain between 10am and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 49. Southwest wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 49 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 32. West wind 3 to 6 mph.

    Low: 32 °F

    Partly Cloudy

  • Thursday

    Thursday: Rain likely, mainly after 1pm. Mostly cloudy, with a high near 43. Chance of precipitation is 70%.

    High: 43 °F

    Chance Rain
    then Rain
    Likely

  • Thursday Night

    Thursday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 60%.

    Low: 29 °F

    Rain Likely

  • Friday

    Friday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 20. Northwest wind 14 to 18 mph, with gusts as high as 29 mph.
Tuesday
Sunny, with a high near 35. Northwest wind 7 to 13 mph, with gusts as high as 23 mph.
Tuesday Night
A chance of snow after 1am. Increasing clouds, with a low around 27. Light south wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 40%.
Wednesday
A slight chance of snow before 10am, then a slight chance of rain between 10am and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 49. Southwest wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 32. West wind 3 to 6 mph.
Thursday
Rain likely, mainly after 1pm. Mostly cloudy, with a high near 43. Chance of precipitation is 70%.
Thursday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 43.
Friday Night
Mostly clear, with a low around 29.
Saturday
Sunny, with a high near 51.
Saturday Night
Mostly clear, with a low around 34.
Sunday
Mostly sunny, with a high near 47.
Sunday Night
Mostly cloudy, with a low around 26.
Monday
A chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 40%.
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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:
6:53 pm EST Feb 23, 2026
Forecast Valid:
7pm EST Feb 23, 2026-6pm EST Mar 2, 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