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

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Overcast

45°F

7°C

Humidity 44%
Wind Speed W 18 G 24 mph
Barometer 29.89 in (1013.9 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 11 Jan 12:56 pm EST
Extended Forecast for

Potomac MD

  • This Afternoon

    This Afternoon: A chance of rain and snow before 3pm, then a slight chance of rain between 3pm and 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 45. Breezy, with a west wind 17 to 21 mph, with gusts as high as 38 mph. Chance of precipitation is 50%.

    High: 45 °F

    Chance
    Rain/Snow and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 29. Northwest wind 10 to 17 mph, with gusts as high as 38 mph.

    Low: 29 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 44. West wind around 8 mph becoming southwest in the afternoon.

    High: 44 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30. Southwest wind around 5 mph becoming calm in the evening.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 48. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 48 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain after 1pm. Cloudy, with a high near 51. Chance of precipitation is 30%.

    High: 51 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain. Mostly cloudy, with a low around 34. Chance of precipitation is 50%.

    Low: 34 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 39. Chance of precipitation is 50%.

    High: 39 °F

    Chance Rain
    then Chance
    Rain/Snow

Detailed Forecast

This Afternoon
A chance of rain and snow before 3pm, then a slight chance of rain between 3pm and 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 45. Breezy, with a west wind 17 to 21 mph, with gusts as high as 38 mph. Chance of precipitation is 50%.
Tonight
Mostly clear, with a low around 29. Northwest wind 10 to 17 mph, with gusts as high as 38 mph.
Monday
Mostly sunny, with a high near 44. West wind around 8 mph becoming southwest in the afternoon.
Monday Night
Partly cloudy, with a low around 30. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 48. Calm wind becoming south 5 to 8 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
A chance of rain after 1pm. Cloudy, with a high near 51. Chance of precipitation is 30%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 34. Chance of precipitation is 50%.
Thursday
A chance of rain before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 39. Chance of precipitation is 50%.
Thursday Night
A chance of snow before 1am. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 34.
Friday Night
Partly cloudy, with a low around 24.
Saturday
Partly sunny, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Potomac MD
 39.02°N 77.2°W (Elev. 381 ft)
Last Update:
12:54 pm EST Jan 11, 2026
Forecast Valid:
1pm EST Jan 11, 2026-6pm EST Jan 17, 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