Excessive Rainfall Potential for the Southeast; Heat Expands for Center of the Nation; Critical Fire Weather for Pacific Northwest

Flash flooding threatens areas from the Tennessee Valley to the Carolinas as storms repeat along a stalled front. Monsoonal storms may trigger flooding in the Southwest. Dangerous heat expands across the Desert Southwest, Plains, mid-Mississippi Valley and Southern Tier. Critical fire weather for interior Pacific Northwest. Cooler, drier air brings brief relief to the Great Lakes and Northeast. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

57°F

14°C

Humidity	NA
Wind Speed	Calm
Barometer	30.23 in (1024.8 mb)
Dewpoint	N/A
Visibility	10.00 mi
Last update	24 Jul 6:56 am EDT

More Information:

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

Extended Forecast for

Clarksville MD

Today
High: 81 °F
Increasing
Clouds
Tonight
Low: 61 °F
Mostly Cloudy
Saturday
High: 81 °F
Mostly Sunny
Saturday Night
Low: 63 °F
Partly Cloudy
Sunday
High: 85 °F
Mostly Sunny
Sunday Night
Low: 66 °F
Slight Chance
T-storms then
Slight Chance
Showers
Monday
High: 87 °F
Mostly Sunny
then Chance
T-storms
Monday Night
Low: 68 °F
Chance
T-storms
Tuesday
High: 87 °F
Chance
Showers then
Showers
Likely

Detailed Forecast

Today

Increasing clouds, with a high near 81. Calm wind becoming east 5 to 7 mph in the afternoon.

Tonight

Mostly cloudy, with a low around 61. Southeast wind around 5 mph becoming calm in the evening.

Saturday

Mostly sunny, with a high near 81. Calm wind becoming east around 6 mph in the afternoon.

Saturday Night

Partly cloudy, with a low around 63. Light southeast wind.

Sunday

Mostly sunny, with a high near 85. Light and variable wind.

Sunday Night

A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 66. Chance of precipitation is 20%.

Monday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 30%.

Monday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.

Tuesday

A chance of showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 87. Chance of precipitation is 70%.

Tuesday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

Wednesday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 20%.

Wednesday Night

Partly cloudy, with a low around 65.

Thursday

A slight chance of showers. Sunny, with a high near 85. Chance of precipitation is 20%.