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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.

Fair

39°F

4°C

Humidity 76%
Wind Speed Calm
Barometer 30.47 in (1033.6 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 18 Oct 1:56 am EDT
Extended Forecast for

3 Miles W North Potomac MD

  • Overnight

    Overnight: Clear, with a low around 35. North wind around 6 mph.

    Low: 35 °F

    Clear

  • Sunday

    Sunday: Areas of frost before 9am. Otherwise, sunny, with a high near 59. North wind around 6 mph.

    High: 59 °F

    Areas Frost
    then Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 37. Calm wind.

    Low: 37 °F

    Clear

  • Monday

    Monday: Areas of frost between 7am and 8am. Otherwise, sunny, with a high near 63. North wind 6 to 9 mph.

    High: 63 °F

    Areas Frost
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44. North wind 6 to 8 mph.

    Low: 44 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Tuesday Night

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

    Low: 43 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 35. North wind around 6 mph.
Sunday
Areas of frost before 9am. Otherwise, sunny, with a high near 59. North wind around 6 mph.
Sunday Night
Clear, with a low around 37. Calm wind.
Monday
Areas of frost between 7am and 8am. Otherwise, sunny, with a high near 63. North wind 6 to 9 mph.
Monday Night
Partly cloudy, with a low around 44. North wind 6 to 8 mph.
Tuesday
Sunny, with a high near 66.
Tuesday Night
Mostly clear, with a low around 43.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 65.
Thursday Night
Mostly clear, with a low around 46.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 45.
Saturday
Sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W North Potomac MD
 39.1°N 77.31°W (Elev. 348 ft)
Last Update:
2:23 am EDT Oct 18, 2026
Forecast Valid:
2am EDT Oct 18, 2026-6pm EDT Oct 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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Chance of Precipitation