Watching Potential Tsunami Impacts Across the Pacific Basin

A strong earthquake in the Pacific Basin has generated a tsunami wave. Tsunami Warnings and Advisories have been issued for Hawaii, portions of Alaska, Guam, American Samoa, and the West Coast of the U.S. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

82°F

28°C

Humidity	100%
Wind Speed	NW 6 mph
Barometer	30.07 in (1019.1 mb)
Dewpoint	82°F (28°C)
Visibility	10.00 mi
Heat Index	95°F (35°C)
Last update	30 Jul 8:56 am EDT

More Information:

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

Extended Forecast for

Clarksburg MD

Heat Advisory July 30, 11:00am until July 30, 08:00pm

Click here for hazard details and duration

Heat Advisory

Today
High: 96 °F
Sunny
Tonight
Low: 74 °F
Slight Chance
T-storms
Thursday
High: 91 °F
Chance
Showers then
T-storms
Thursday Night
Low: 69 °F
T-storms then
Showers
Likely
Friday
High: 76 °F
Chance
Showers then
Chance
T-storms
Friday Night
Low: 61 °F
Chance
T-storms then
Chance
Showers
Saturday
High: 79 °F
Sunny
Saturday Night
Low: 58 °F
Mostly Clear
Sunday
High: 80 °F
Sunny

Detailed Forecast

Today

Sunny, with a high near 96. Heat index values as high as 104. Calm wind becoming south around 5 mph in the afternoon.

Tonight

A slight chance of showers and thunderstorms between 10pm and 2am. Partly cloudy, with a low around 74. Light south wind. Chance of precipitation is 20%.

Thursday

A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 91. Calm wind becoming southeast around 6 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Showers and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms between 2am and 5am, then a chance of showers after 5am. Low around 69. Northeast wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Friday

A chance of showers, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 76. Northeast wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.

Friday Night

A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.

Saturday

Sunny, with a high near 79.

Saturday Night

Mostly clear, with a low around 58.

Sunday

Sunny, with a high near 80.

Sunday Night

Partly cloudy, with a low around 60.

Monday

Mostly sunny, with a high near 83.

Monday Night

Partly cloudy, with a low around 61.