Tracking Storm System Across the Eastern U.S.

A storm system will continue to produce widespread showers and thunderstorms as it progresses eastward across the central U.S. into the Northeast through the weekend. There are risks of severe thunderstorms and excessive rainfall on Saturday from the Ozarks into the mid-Mississippi River Valley with potential for damaging winds, large hail, tornadoes, and flash flooding. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

63°F

17°C

Humidity	48%
Wind Speed	S 6 mph
Barometer	30.07 in (1019.5 mb)
Dewpoint	43°F (6°C)
Visibility	10.00 mi
Last update	18 Oct 10:56 am EDT

More Information:

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

Extended Forecast for

Olney MD

Today
High: 71 °F
Decreasing
Clouds
Tonight
Low: 53 °F
Mostly Clear
Sunday
High: 74 °F
Mostly Sunny
then Chance
Showers
Sunday Night
Low: 49 °F
Showers
Monday
High: 63 °F
Chance
Showers then
Sunny
Monday Night
Low: 42 °F
Mostly Clear
Tuesday
High: 68 °F
Sunny
Tuesday Night
Low: 45 °F
Chance
Showers
Wednesday
High: 59 °F
Mostly Sunny

Detailed Forecast

Today

Mostly cloudy, then gradually becoming sunny, with a high near 71. South wind 5 to 7 mph.

Tonight

Mostly clear, with a low around 53. Southeast wind 3 to 5 mph.

Sunday

A chance of showers after 2pm. Mostly sunny, with a high near 74. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 30%.

Sunday Night

Showers, mainly between 8pm and 2am. Low around 49. South wind 10 to 15 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

Monday

A chance of showers before 8am. Mostly sunny, with a high near 63. West wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

Monday Night

Mostly clear, with a low around 42.

Tuesday

Sunny, with a high near 68.

Tuesday Night

A chance of showers before 2am. Partly cloudy, with a low around 45. Chance of precipitation is 30%.

Wednesday

Mostly sunny, with a high near 59.

Wednesday Night

Mostly clear, with a low around 40.

Thursday

Sunny, with a high near 60.