Heavy Rainfall and Severe Thunderstorm Threats; Heat Risk Expands; Monitoring the Tropics

Flash flooding risks continue for portions of the Four Corners and Great Basin through today. Severe thunderstorms are outlooked from the eastern Great Lakes, southern New England into the mid-Atlantic through Tuesday. Heat risk increases and expands across the center of the nation and across the Ohio Valley and mid-Atlantic this week. Continue to closely monitor tropical development in the Gulf. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

82°F

28°C

Humidity	74%
Wind Speed	Calm
Barometer	30.11 in (1020.3 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	87°F (31°C)
Last update	31 Aug 4:56 pm EDT

More Information:

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

Extended Forecast for

Rossmoor MD

This Afternoon
High: 88 °F
Slight Chance
T-storms
Tonight
Low: 72 °F
Slight Chance
T-storms then
Mostly Cloudy
Tuesday
High: 94 °F
Mostly Sunny
then Slight
Chance
T-storms
Tuesday Night
Low: 74 °F
Chance
T-storms
Wednesday
High: 93 °F
Mostly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 74 °F
Chance
T-storms
Thursday
High: 95 °F
Sunny
Thursday Night
Low: 74 °F
Slight Chance
T-storms
Friday
High: 88 °F
Mostly Sunny
then Chance
T-storms

Detailed Forecast

This Afternoon

A slight chance of showers and thunderstorms. Partly sunny, with a high near 88. Light north wind. Chance of precipitation is 20%.

Tonight

A slight chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 72. Calm wind. Chance of precipitation is 20%.

Tuesday

A slight chance of showers between 3pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 94. Calm wind becoming west 5 to 7 mph in the morning. Chance of precipitation is 20%.

Tuesday Night

A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 74. Light and variable wind. Chance of precipitation is 30%.

Wednesday

A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93. Light northwest wind. Chance of precipitation is 20%.

Wednesday Night

A chance of showers and thunderstorms, mainly between 8pm and 2am. Partly cloudy, with a low around 74. Chance of precipitation is 40%.

Thursday

Sunny, with a high near 95.

Thursday Night

A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 74. Chance of precipitation is 20%.

Friday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 30%.

Friday Night

A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 67. Chance of precipitation is 30%.