Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

A Few Clouds

91°F

33°C

Humidity	39%
Wind Speed	SW 7 mph
Barometer	30.08 in (1019.4 mb)
Dewpoint	63°F (17°C)
Visibility	10.00 mi
Heat Index	92°F (33°C)
Last update	19 May 5:56 pm EDT

More Information:

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

Extended Forecast for

3 Miles WNW North Potomac MD

Tonight
Low: 71 °F
Scattered
T-storms then
Partly Cloudy
Wednesday
High: 93 °F
Sunny then
T-storms
Wednesday Night
Low: 56 °F
T-storms then
Showers
Likely
Thursday
High: 65 °F
Showers
Thursday Night
Low: 52 °F
Chance
Showers then
Showers
Likely
Friday
High: 63 °F
Showers
Friday Night
Low: 51 °F
Showers
Saturday
High: 66 °F
Showers
Saturday Night
Low: 56 °F
Showers
Likely

Detailed Forecast

Tonight

Scattered showers and thunderstorms, mainly before 7pm. Mostly cloudy, then gradual clearing toward daybreak, with a low around 71. Southwest wind 5 to 9 mph. Chance of precipitation is 30%.

Wednesday

A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. High near 93. West wind 5 to 11 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

Showers and thunderstorms before 2am, then a chance of showers. Low around 56. North wind around 7 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday

A chance of showers before 8am, then showers and possibly a thunderstorm between 8am and 2pm, then a chance of showers after 2pm. High near 65. Northeast wind 8 to 13 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday Night

Showers likely, mainly after 2am. Mostly cloudy, with a low around 52. East wind 3 to 7 mph. Chance of precipitation is 60%.

Friday

Showers, with thunderstorms also possible after 2pm. High near 63. Chance of precipitation is 80%.

Friday Night

Showers. Low around 51. Chance of precipitation is 80%.

Saturday

Showers. High near 66. Chance of precipitation is 80%.

Saturday Night

Showers likely, mainly before 8pm. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.

Sunday

A chance of showers. Mostly cloudy, with a high near 75. Chance of precipitation is 50%.