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

Heavy Rain and Thunderstorms in the Lower Ohio Valley and Southeast; Flooding Continues Along the East Coast of Florida

An approaching cold front may produce isolated heavy rainfall and severe weather today over portions of the Lower Ohio Valley and Southeast. While the heavy rainfall is ending across east Florida, significant river flooding is forecast along the St. John’s and the Peace rivers through the end of the week as flood waters will be slow to recede. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

72°F

22°C

Humidity 55%
Wind Speed SE 10 mph
Barometer 30.05 in (1018.9 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 4 Nov 3:56 pm EST
Extended Forecast for

Gaithersburg MD

  • Tonight

    Tonight: A chance of rain, mainly after 2am. Mostly cloudy, with a low around 63. South wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    Low: 63 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: A chance of rain, mainly before 10am. Mostly cloudy, with a high near 74. South wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.

    High: 74 °F

    Chance Rain
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: A slight chance of rain before 11pm, then a chance of rain after 1am. Mostly cloudy, with a low around 57. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 57 °F

    Chance Rain

  • Friday

    Friday: A slight chance of rain. Partly sunny, with a high near 69. North wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 20%.

    High: 69 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47. Calm wind becoming northwest 5 to 8 mph after midnight.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of rain, mainly after 2am. Mostly cloudy, with a low around 63. South wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Thursday
A chance of rain, mainly before 10am. Mostly cloudy, with a high near 74. South wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.
Thursday Night
A slight chance of rain before 11pm, then a chance of rain after 1am. Mostly cloudy, with a low around 57. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Friday
A slight chance of rain. Partly sunny, with a high near 69. North wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 47. Calm wind becoming northwest 5 to 8 mph after midnight.
Saturday
Mostly sunny, with a high near 61.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 40.
Monday
Sunny, with a high near 61.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
Mostly clear, with a low around 40.
Veterans Day
Sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Gaithersburg MD
 39.13°N 77.24°W (Elev. 400 ft)
Last Update:
3:53 pm EST Nov 4, 2026
Forecast Valid:
4pm EST Nov 4, 2026-6pm EST Nov 11, 2026
 
Forecast Discussion
 
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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