Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

74°F

23°C

Humidity	74%
Wind Speed	S 3 mph
Barometer	29.70 in (1006.6 mb)
Dewpoint	65°F (18°C)
Visibility	10.00 mi
Last update	18 Jun 4:56 am EDT

More Information:

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

Extended Forecast for

2 Miles NW Potomac MD

Today
High: 92 °F
Breezy.
Slight Chance
Showers then
Chance
T-storms
Tonight
Low: 68 °F
Partly Cloudy
then Chance
Showers
Juneteenth
High: 83 °F
Chance
Showers then
Sunny
Friday Night
Low: 62 °F
Mostly Clear
Saturday
High: 84 °F
Sunny
Saturday Night
Low: 63 °F
Mostly Clear
Sunday
High: 86 °F
Mostly Sunny
Sunday Night
Low: 69 °F
Slight Chance
T-storms then
Chance
Showers
Monday
High: 85 °F
Showers

Detailed Forecast

Today

A slight chance of showers before noon, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 92. Breezy, with a west wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 30%.

Tonight

A slight chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Increasing clouds, with a low around 68. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

Juneteenth

A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 11am. Cloudy through mid morning, then gradual clearing, with a high near 83. Northwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

Friday Night

Mostly clear, with a low around 62. Northwest wind 5 to 9 mph, with gusts as high as 18 mph.

Saturday

Sunny, with a high near 84. Northwest wind 7 to 13 mph, with gusts as high as 24 mph.

Saturday Night

Mostly clear, with a low around 63.

Sunday

Mostly sunny, with a high near 86.

Sunday Night

A chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 40%.

Monday

Showers likely, then showers and possibly a thunderstorm after 2pm. High near 85. Chance of precipitation is 80%.

Monday Night

Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 62. Chance of precipitation is 80%.

Tuesday

Mostly sunny, with a high near 82.

Tuesday Night

Partly cloudy, with a low around 61.

Wednesday

Mostly sunny, with a high near 84.