Heavy Rainfall Threat for Portions of Mid-Atlantic and Northeast; Heat Linger for Southeast and Expands for the West

Moisture and nearby frontal boundary will focus more showers and thunderstorms for portions of the Mid-Atlantic and Northeast today. Rainfall could be locally heavy resulting instances of flash flooding. Meanwhile, the heat lingers for areas of the Southeast and expands across the Western U.S. the next several days. Between these areas, severe thunderstorms possible for the Plains and Midwest. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

83°F

28°C

Humidity	79%
Wind Speed	Calm
Barometer	29.97 in (1015.7 mb)
Dewpoint	76°F (24°C)
Visibility	10.00 mi
Heat Index	91°F (33°C)
Last update	6 Jul 6:56 pm EDT

More Information:

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

Extended Forecast for

Germantown MD

Flood Watch until July 7, 12:00am

Click here for hazard details and duration

Flood Watch

Flood Watch until July 7, 12:00am
NOW until 12:00am Tue
Flood Watch
Tonight
Low: 71 °F
T-storms
Likely and
Patchy Fog
Tuesday
High: 84 °F
Chance
Showers and
Patchy Fog
then Chance
T-storms
Tuesday Night
Low: 68 °F
Showers
Wednesday
High: 82 °F
Chance
Showers
Wednesday Night
Low: 70 °F
Slight Chance
T-storms then
Chance
Showers
Thursday
High: 86 °F
Chance
Showers then
Showers
Likely
Thursday Night
Low: 69 °F
Showers
Likely then
Slight Chance
T-storms
Friday
High: 88 °F
Mostly Sunny
then Chance
T-storms

Detailed Forecast

Tonight

Showers and thunderstorms likely before 3am, then isolated showers between 3am and 5am. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 71. East wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Tuesday

A chance of showers, with thunderstorms also possible after 2pm. Patchy fog before 11am. Otherwise, partly sunny, with a high near 84. Light northeast wind. Chance of precipitation is 40%.

Tuesday Night

Showers and thunderstorms before 2am, then showers likely. Low around 68. Northeast wind 3 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday

A chance of showers, mainly before 2pm. Mostly cloudy, with a high near 82. Northeast wind 3 to 5 mph. Chance of precipitation is 30%.

Wednesday Night

A slight chance of showers and thunderstorms, then a chance of showers after 11pm. Mostly cloudy, with a low around 70. Light south wind. Chance of precipitation is 30%.

Thursday

A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 86. Chance of precipitation is 70%.

Thursday Night

Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.

Friday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 50%.

Friday Night

A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.

Saturday

A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 40%.

Saturday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 30%.

Sunday

A chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 30%.

Sunday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.

Monday

A slight chance of showers. Mostly sunny, with a high near 86. Chance of precipitation is 20%.