Severe Thunderstorms for Mid-Atlantic and Northeast; Typhoon Approaching Guam

A cold front will sweep eastward today accompanied by strong to severe thunderstorms for the mid-Atlantic and Northeast today. In the wake of this cold front, autumn like temperatures and gusty winds from the Plains, Mississippi Valley, Great Lakes to most of the eastern seaboard. Fire weather conditions for lower Mississippi Valley into portions of California. For Guam, a typhoon is approaching. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

82°F

28°C

Humidity	67%
Wind Speed	SW 9 mph
Barometer	29.74 in (1008.1 mb)
Dewpoint	70°F (21°C)
Visibility	10.00 mi
Heat Index	86°F (30°C)
Last update	16 Oct 4:56 pm EDT

More Information:

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

Extended Forecast for

Gaithersburg MD

Severe T-storm Watch October 16, 05:42pm until October 16, 08:00pm

Click here for hazard details and duration

Severe T-storm Watch

Severe T-storm Watch October 16, 05:42pm until October 16, 08:00pm
NOW until 8:00pm Fri
Severe T-storm Watch
This Afternoon
High: 80 °F
Severe
Thunderstorms
Tonight
Low: 46 °F
Severe
Thunderstorms
then
Scattered
Showers
Saturday
High: 53 °F
Gradual
Clearing
Saturday Night
Low: 34 °F
Clear
Sunday
High: 56 °F
Sunny
Sunday Night
Low: 38 °F
Mostly Clear
Monday
High: 57 °F
Chance
Showers
Monday Night
Low: 44 °F
Chance
Showers

Detailed Forecast

This Afternoon

Showers likely and possibly a thunderstorm. Some of the storms could be severe. Mostly cloudy, with a high near 80. Southwest wind around 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and possibly a thunderstorm before 9pm, then scattered showers. Some of the storms could be severe. Low around 46. Northwest wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

Cloudy through mid morning, then gradual clearing, with a high near 53. North wind 16 to 18 mph, with gusts as high as 30 mph.

Saturday Night

Clear, with a low around 34. North wind 6 to 9 mph.

Sunday

Sunny, with a high near 56. Northeast wind around 7 mph.

Sunday Night

Mostly clear, with a low around 38.

Monday

A chance of showers, mainly after 2pm. Mostly sunny, with a high near 57. Chance of precipitation is 30%.

Monday Night

A chance of showers, mainly before 8pm. Mostly cloudy, with a low around 44. Chance of precipitation is 30%.