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

Tracking Storm System Across the Eastern U.S.

A storm system will continue to produce widespread showers and thunderstorms as it progresses eastward across the central U.S. into the Northeast through the weekend. There are risks of severe thunderstorms and excessive rainfall on Saturday from the Ozarks into the mid-Mississippi River Valley with potential for damaging winds, large hail, tornadoes, and flash flooding. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

45°F

7°C

Humidity 100%
Wind Speed Calm
Barometer 30.03 in (1018.3 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 17 Oct 11:56 pm EDT
Extended Forecast for

Lisbon MDSimilar City Names

  • Overnight

    Overnight: Mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly cloudy, then becoming sunny during the afternoon, with a high near 69. Calm wind becoming south around 6 mph in the afternoon.

    High: 69 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 51. Southeast wind 3 to 5 mph.

    Low: 51 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of showers after 2pm. Partly sunny, with a high near 74. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 50%.

    High: 74 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 49. South wind 9 to 13 mph becoming southwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 70%.

    Low: 49 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers, mainly before 8am. Mostly sunny, with a high near 63. Chance of precipitation is 30%.

    High: 63 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 41. Calm wind.
Saturday
Mostly cloudy, then becoming sunny during the afternoon, with a high near 69. Calm wind becoming south around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 51. Southeast wind 3 to 5 mph.
Sunday
A chance of showers after 2pm. Partly sunny, with a high near 74. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 50%.
Sunday Night
Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 49. South wind 9 to 13 mph becoming southwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 70%.
Monday
A chance of showers, mainly before 8am. Mostly sunny, with a high near 63. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 43.
Tuesday
Sunny, with a high near 68.
Tuesday Night
Partly cloudy, with a low around 44.
Wednesday
Mostly sunny, with a high near 58.
Wednesday Night
Mostly clear, with a low around 40.
Thursday
Mostly sunny, with a high near 60.
Thursday Night
Mostly cloudy, with a low around 44.
Friday
Mostly sunny, with a high near 60.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lisbon MDSimilar City Names
 39.34°N 77.06°W (Elev. 551 ft)
Last Update:
10:29 pm EDT Oct 17, 2025
Forecast Valid:
12am EDT Oct 18, 2025-6pm EDT Oct 24, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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