Autumn Temperatures for Eastern Third of the Country; Developing Offshore Coastal Storm

Cooler and less humid conditions for most of the eastern third of the nation as high pressure dominates the weather pattern. Otherwise, rather tranquil weather for most of the nation for the end of the weekend into the start of this week. We continue to monitor a developing coastal storm offshore of the Carolinas; Coastal flooding and beach erosion possible along portions of the Mid-Atlantic. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

61°F

16°C

Humidity 29%
Wind Speed Vrbl 3 mph
Barometer 30.57 in (1037.0 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 18 Oct 2:56 pm EDT
Extended Forecast for

Potomac MD

Frost Advisory October 19, 01:00am until October 19, 09:00am
Click here for hazard details and duration
Frost Advisory
  • Tonight

    Tonight: Patchy frost after 4am.  Otherwise, clear, with a low around 35. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 35 °F

    Clear then
    Patchy Frost

  • Monday

    Monday: Patchy frost before 9am.  Otherwise, sunny, with a high near 65. North wind 5 to 10 mph.

    High: 65 °F

    Patchy Frost
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 44. North wind 5 to 7 mph.

    Low: 44 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 66. North wind around 10 mph, with gusts as high as 18 mph.

    High: 66 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 44. North wind around 7 mph.

    Low: 44 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Thursday Night

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

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy frost after 4am. Otherwise, clear, with a low around 35. Northeast wind around 5 mph becoming calm in the evening.
Monday
Patchy frost before 9am. Otherwise, sunny, with a high near 65. North wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 44. North wind 5 to 7 mph.
Tuesday
Sunny, with a high near 66. North wind around 10 mph, with gusts as high as 18 mph.
Tuesday Night
Mostly clear, with a low around 44. North wind around 7 mph.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 41.
Thursday
Sunny, with a high near 66.
Thursday Night
Mostly clear, with a low around 46.
Friday
Sunny, with a high near 63.
Friday Night
Mostly clear, with a low around 41.
Saturday
Sunny, with a high near 60.
Saturday Night
Mostly clear, with a low around 40.
Sunday
Mostly sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
Potomac MD
 39.04°N 77.23°W (Elev. 249 ft)
2:23 pm EDT Oct 18, 2026
3pm EDT Oct 18, 2026-6pm EDT Oct 25, 2026
 
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Additional Resources

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