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

Atmospheric River Continues Areas of Heavy Rain and Snow for California This Weekend

An atmospheric river will continue to bring gusty winds, moderate to heavy rainfall, and potential flooding to southern California and the southern Great Basin through Sunday. Periods of heavy snow will continue as well above 7,000 feet over the Sierra Nevada mountains associated with this atmospheric river. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Overcast

48°F

9°C

Humidity 54%
Wind Speed Calm
Barometer 29.92 in (1014.8 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 15 Nov 12:56 am EST
Extended Forecast for

Dayton MD

  • Overnight

    Overnight: Mostly cloudy, with a low around 39. Calm wind.

    Low: 39 °F

    Mostly Cloudy

  • Saturday

    Saturday: Scattered sprinkles after 4pm. Mostly cloudy, with a high near 61. Calm wind becoming south around 6 mph in the afternoon.

    High: 61 °F

    Scattered
    Sprinkles

  • Saturday Night

    Saturday Night: Scattered showers or sprinkles before 2am, then isolated showers between 2am and 4am. Cloudy, then gradually becoming partly cloudy, with a low around 50. Southwest wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    Low: 50 °F

    Scattered
    Showers

  • Sunday

    Sunday: Sunny, with a high near 58. Breezy, with a northwest wind 15 to 21 mph, with gusts as high as 37 mph.

    High: 58 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 35. West wind 10 to 15 mph, with gusts as high as 29 mph.

    Low: 35 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of rain after 1pm. Partly sunny, with a high near 46. Chance of precipitation is 30%.

    High: 46 °F

    Partly Sunny
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: A chance of rain before 1am. Mostly cloudy, with a low around 35. Chance of precipitation is 40%.

    Low: 35 °F

    Chance Rain

Detailed Forecast

Overnight
Mostly cloudy, with a low around 39. Calm wind.
Saturday
Scattered sprinkles after 4pm. Mostly cloudy, with a high near 61. Calm wind becoming south around 6 mph in the afternoon.
Saturday Night
Scattered showers or sprinkles before 2am, then isolated showers between 2am and 4am. Cloudy, then gradually becoming partly cloudy, with a low around 50. Southwest wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 58. Breezy, with a northwest wind 15 to 21 mph, with gusts as high as 37 mph.
Sunday Night
Mostly clear, with a low around 35. West wind 10 to 15 mph, with gusts as high as 29 mph.
Monday
Sunny, with a high near 48.
Monday Night
Mostly clear, with a low around 30.
Tuesday
A chance of rain after 1pm. Partly sunny, with a high near 46. Chance of precipitation is 30%.
Tuesday Night
A chance of rain before 1am. Mostly cloudy, with a low around 35. Chance of precipitation is 40%.
Wednesday
Partly sunny, with a high near 50.
Wednesday Night
Mostly cloudy, with a low around 36.
Thursday
Partly sunny, with a high near 54.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 43. Chance of precipitation is 40%.
Friday
A chance of rain. Mostly cloudy, with a high near 60. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Dayton MD
 39.22°N 77°W (Elev. 492 ft)
Last Update:
12:53 am EST Nov 15, 2025
Forecast Valid:
1am EST Nov 15, 2025-6pm EST Nov 21, 2025
 
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