Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Hazardous Weather Conditions

Freeze Watch in effect from April 21, 02:00 AM EDT until April 21, 10:00 AM EDT

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Partly Cloudy

61°F

16°C

Humidity	97%
Wind Speed	Calm
Barometer	29.86 in (1012.1 mb)
Dewpoint	60°F (16°C)
Visibility	10.00 mi
Last update	19 Apr 12:56 am EDT

More Information:

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

Extended Forecast for

Potomac MD

Freeze Watch April 21, 02:00am until April 21, 10:00am

Click here for hazard details and duration

Freeze Watch

Overnight
Low: 49 °F
Scattered
Showers
Sunday
High: 58 °F
Showers then
Isolated
Showers
Sunday Night
Low: 41 °F
Mostly Clear
Monday
High: 54 °F
Mostly Sunny
Monday Night
Low: 32 °F
Mostly Clear
Tuesday
High: 59 °F
Sunny
Tuesday Night
Low: 47 °F
Partly Cloudy
Wednesday
High: 73 °F
Chance
Showers
Wednesday Night
Low: 48 °F
Partly Cloudy

Detailed Forecast

Overnight

Scattered showers, mainly after 4am. Mostly cloudy, with a low around 49. Northeast wind around 6 mph. Chance of precipitation is 30%.

Sunday

Showers, mainly before noon. High near 58. Northwest wind 13 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday Night

Mostly clear, with a low around 41. Northwest wind 5 to 8 mph.

Monday

Mostly sunny, with a high near 54. Northwest wind 9 to 13 mph, with gusts as high as 24 mph.

Monday Night

Mostly clear, with a low around 32. Northwest wind 5 to 9 mph.

Tuesday

Sunny, with a high near 59.

Tuesday Night

Partly cloudy, with a low around 47.

Wednesday

A chance of showers after 8am. Partly sunny, with a high near 73. Chance of precipitation is 40%.