Heat Persists in the South Central U.S. and California; Heavy Rain in the Ohio Valley

Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley, as well as in the Southwest and California this week with limited nighttime relief. Heavy rainfall will lead to localized areas of flash flooding in parts of the Ohio Valley/Central Appalachians. Dry and breezy conditions will enhance fire weather concerns across the northern Rockies and High Plains. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Mostly Cloudy

72°F

22°C

Humidity	79%
Wind Speed	NW 5 mph
Barometer	29.99 in (1016.3 mb)
Dewpoint	65°F (18°C)
Visibility	10.00 mi
Last update	10 Sep 5:56 am EDT

More Information:

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

Extended Forecast for

2 Miles NNW Potomac MD

Today
High: 87 °F
Slight Chance
Showers then
Partly Sunny
Tonight
Low: 67 °F
Chance
T-storms then
Showers
Likely
Friday
High: 81 °F
Chance
Showers then
Partly Sunny
Friday Night
Low: 65 °F
Increasing
Clouds
Saturday
High: 82 °F
Mostly Cloudy
then Chance
Showers
Saturday Night
Low: 68 °F
Showers
Likely
Sunday
High: 85 °F
Chance
Showers then
Slight Chance
T-storms
Sunday Night
Low: 66 °F
Partly Cloudy
Monday
High: 84 °F
Mostly Sunny

Detailed Forecast

Today

A slight chance of showers before 10am. Partly sunny, with a high near 87. West wind 5 to 8 mph. Chance of precipitation is 20%.

Tonight

Showers and thunderstorms likely before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Increasing clouds, with a low around 67. Light northwest wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday

A chance of showers before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 81. North wind 3 to 6 mph. Chance of precipitation is 30%.

Friday Night

Increasing clouds, with a low around 65. Calm wind.

Saturday

A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 82. Southeast wind 3 to 7 mph. Chance of precipitation is 40%.

Saturday Night

A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.

Sunday

A chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 30%.

Sunday Night

Partly cloudy, with a low around 66.

Monday

Mostly sunny, with a high near 84.

Monday Night

Partly cloudy, with a low around 64.

Tuesday

Sunny, with a high near 86.

Tuesday Night

Partly cloudy, with a low around 68.

Wednesday

A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 30%.