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

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Light Rain

59°F

15°C

Humidity NA
Wind Speed Calm
Barometer 30.23 in (1024.8 mb)
Dewpoint N/A
Visibility 4.00 mi
Last update 4 Oct 4:56 am EDT
Extended Forecast for

Dayton MD

  • Overnight

    Overnight: A chance of showers. Cloudy, with a low around 57. East wind around 5 mph. Chance of precipitation is 30%.

    Low: 57 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly before noon. Cloudy, with a high near 64. East wind 3 to 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Cloudy

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 68. Northwest wind 6 to 13 mph, with gusts as high as 22 mph.

    High: 68 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 44. Northwest wind around 6 mph.

    Low: 44 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 46.

    Low: 46 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Overnight
A chance of showers. Cloudy, with a low around 57. East wind around 5 mph. Chance of precipitation is 30%.
Sunday
Showers likely, mainly before noon. Cloudy, with a high near 64. East wind 3 to 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Cloudy, with a low around 56. Calm wind.
Monday
Partly sunny, then gradually becoming sunny, with a high near 68. Northwest wind 6 to 13 mph, with gusts as high as 22 mph.
Monday Night
Clear, with a low around 44. Northwest wind around 6 mph.
Tuesday
Sunny, with a high near 63.
Tuesday Night
Clear, with a low around 46.
Wednesday
Sunny, with a high near 69.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Sunny, with a high near 73.
Thursday Night
Mostly clear, with a low around 52.
Friday
Sunny, with a high near 72.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Mostly sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Dayton MD
 39.22°N 77°W (Elev. 492 ft)
Last Update:
4:52 am EDT Oct 4, 2026
Forecast Valid:
5am EDT Oct 4, 2026-6pm EDT Oct 10, 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