Hurricane Lowell to Impact Kauai; Heat Continues in the South-Central U.S.

Hurricane Lowell is forecast to pass west of Kauai today. Impacts such as high surf and heavy rain could impact all of the islands. A Hurricane Warning is in effect for Kauai, Niihau and the surrounding coastal waters. Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley, as well as in the Southwest this week with limited nighttime relief. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

78°F

26°C

Humidity	62%
Wind Speed	SE 5 mph
Barometer	30.23 in (1024.9 mb)
Dewpoint	64°F (18°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	8 Sep 6:56 pm EDT

More Information:

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

Extended Forecast for

Derwood MD

Tonight
Low: 65 °F
Partly Cloudy
Wednesday
High: 87 °F
Sunny
Wednesday Night
Low: 70 °F
Mostly Clear
Thursday
High: 85 °F
Slight Chance
Showers then
Showers
Likely
Thursday Night
Low: 66 °F
Showers
Likely
Friday
High: 81 °F
Mostly Sunny
Friday Night
Low: 62 °F
Partly Cloudy
then Slight
Chance
Showers
Saturday
High: 81 °F
Chance
Showers
Saturday Night
Low: 66 °F
Chance
Showers

Detailed Forecast

Tonight

Partly cloudy, with a low around 65. Calm wind becoming south around 5 mph after midnight.

Wednesday

Sunny, with a high near 87. Southwest wind 6 to 10 mph.

Wednesday Night

Mostly clear, with a low around 70. Southwest wind around 9 mph, with gusts as high as 20 mph.

Thursday

Showers likely, with thunderstorms also possible after 5pm. Increasing clouds, with a high near 85. West wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Northwest wind 3 to 5 mph. Chance of precipitation is 70%.

Friday

Mostly sunny, with a high near 81.

Friday Night

A slight chance of showers after 2am. Partly cloudy, with a low around 62. Chance of precipitation is 20%.

Saturday

A chance of showers, mainly after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 30%.

Saturday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.

Sunday

A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 20%.