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

Autumn Temperatures for Eastern Third of the Country; Super Typhoon Approaching Guam

Cooler and less humid conditions for the eastern third of the nation as a cold slides off the east coast. Combination of dry and breezy conditions may result in spread of wildfires across the lower Mississippi Valley. In addition, fire weather conditions linger into portions of Southern California. For Guam, a super typhoon is approaching. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Overcast

51°F

11°C

Humidity 77%
Wind Speed Vrbl 3 mph
Barometer 30.15 in (1022.2 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 17 Oct 8:56 am EDT
Extended Forecast for

North Potomac MD

  • Today

    Today: A chance of showers, mainly before 9am. Cloudy through mid morning, then gradual clearing, with a high near 54. North wind 14 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.

    High: 54 °F

    Chance
    Showers then
    Partly Sunny

  • Tonight

    Tonight: Areas of frost after 3am. Otherwise, mostly clear, with a low around 34. North wind 6 to 8 mph.

    Low: 34 °F

    Mostly Clear
    then Areas
    Frost

  • Sunday

    Sunday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 57. Northeast wind 5 to 7 mph.

    High: 57 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. Calm wind.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 61. North wind 6 to 8 mph.

    High: 61 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

Detailed Forecast

Today
A chance of showers, mainly before 9am. Cloudy through mid morning, then gradual clearing, with a high near 54. North wind 14 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.
Tonight
Areas of frost after 3am. Otherwise, mostly clear, with a low around 34. North wind 6 to 8 mph.
Sunday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 57. Northeast wind 5 to 7 mph.
Sunday Night
Mostly clear, with a low around 38. Calm wind.
Monday
Mostly sunny, with a high near 61. North wind 6 to 8 mph.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
North Potomac MD
 39.11°N 77.25°W (Elev. 351 ft)
Last Update:
8:13 am EDT Oct 17, 2026
Forecast Valid:
8am EDT Oct 17, 2026-6pm EDT Oct 23, 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