Tropical Moisture Brings Heavy Rain to Southwest; Strong Coastal Low to Impact the East Coast

Deep tropical moisture surging into the Southwest U.S. will lead to widespread showers and thunderstorms capable of producing flash flooding the next several days. A strong coastal low will develop late Friday and is expected to bring flooding, high surf, dangerous rip currents, gusty winds and heavy rain to much of the U.S. East Coast through early next week. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

55°F

13°C

Humidity	55%
Wind Speed	Calm
Barometer	30.43 in (1032.0 mb)
Dewpoint	39°F (4°C)
Visibility	10.00 mi
Last update	9 Oct 6:56 pm EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Clarksburg MD

Frost Advisory October 10, 02:00am until October 10, 09:00am

Click here for hazard details and duration

Frost Advisory

Tonight
Low: 37 °F
Clear then
Areas Frost
Friday
High: 65 °F
Areas Frost
then Mostly
Sunny
Friday Night
Low: 48 °F
Mostly Cloudy
Saturday
High: 67 °F
Slight Chance
Showers then
Chance
Showers
Saturday Night
Low: 57 °F
Showers
Likely
Sunday
High: 62 °F
Showers
Sunday Night
Low: 52 °F
Showers
Likely
Columbus Day
High: 60 °F
Chance
Showers
Monday Night
Low: 52 °F
Chance
Showers

Detailed Forecast

Tonight

Areas of frost after 5am. Otherwise, mostly clear, with a low around 37. Northeast wind 3 to 6 mph.

Friday

Areas of frost before 8am. Otherwise, sunny, with a high near 65. Light and variable wind becoming southeast 5 to 8 mph in the morning.

Friday Night

Mostly cloudy, with a low around 48. Southeast wind around 5 mph becoming calm in the evening.

Saturday

A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 67. Light northeast wind becoming east 5 to 9 mph in the morning. Chance of precipitation is 50%.

Saturday Night

Showers likely, mainly after 2am. Cloudy, with a low around 57. East wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

Sunday

Showers. High near 62. Chance of precipitation is 80%.

Sunday Night

Showers likely, mainly before 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.

Columbus Day

A chance of showers. Mostly cloudy, with a high near 60. Chance of precipitation is 50%.

Monday Night

A chance of showers before 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.

Tuesday

Mostly sunny, with a high near 68.