Flooding Risks from Tropical Moisture Across the Intermountain West and East Coast

Tropical moisture from Isaias and Rachel will impact portions of the Intermountain West and East Coast states. Flooding, gusty winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, record warmth will spread northward across the Mississippi Valley the next few days. Looking for snow, the first winter storm of the season is underway across the northern Rockies. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Light Rain Fog/Mist

61°F

16°C

Humidity	100%
Wind Speed	Vrbl 5 mph
Barometer	30.02 in (1017.7 mb)
Dewpoint	61°F (16°C)
Visibility	5.00 mi
Last update	11 Oct 12:56 pm EDT

More Information:

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

Extended Forecast for

2 Miles SSE Derwood MD

This Afternoon
High: 67 °F
Showers
Tonight
Low: 60 °F
Showers
Columbus Day
High: 72 °F
Chance
Showers then
Mostly Sunny
Monday Night
Low: 57 °F
Partly Cloudy
Tuesday
High: 79 °F
Sunny
Tuesday Night
Low: 64 °F
Mostly Clear
Wednesday
High: 82 °F
Sunny
Wednesday Night
Low: 60 °F
Partly Cloudy
then Slight
Chance
Showers
Thursday
High: 68 °F
Mostly Sunny

Detailed Forecast

This Afternoon

Showers, with thunderstorms also possible after 2pm. High near 67. East wind 11 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Tonight

Showers and thunderstorms. Low around 60. East wind 5 to 7 mph becoming north after midnight. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Columbus Day

A chance of showers, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 72. North wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

Monday Night

Partly cloudy, with a low around 57. Northwest wind around 5 mph becoming calm in the evening.

Tuesday

Sunny, with a high near 79. Calm wind becoming south 5 to 8 mph in the afternoon.

Tuesday Night

Mostly clear, with a low around 64.

Wednesday

Sunny, with a high near 82.

Wednesday Night

A slight chance of showers after 2am. Partly cloudy, with a low around 60. Chance of precipitation is 20%.

Thursday

Mostly sunny, with a high near 68.