Major Winter Storm Ongoing in the Upper Midwest; Severe Weather Tonight from the Mid-South to the Ohio Valley

A major winter storm will continue to bring blizzard conditions, heavy snowfall, icing, and strong winds through Monday across the Upper Midwest and Upper Great Lakes. A line of storms will be capable of producing widespread damaging winds, tornadoes, and some large hail from the Mid-South to the Ohio Valley and the Southeast through tonight, moving into the Mid-Atlantic Monday. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Rain

54°F

12°C

Humidity	NA
Wind Speed	E 9 G 16 mph
Barometer	29.87 in (1012.8 mb)
Dewpoint	N/A
Visibility	3.00 mi
Wind Chill	51°F (11°C)
Last update	16 Mar 12:56 am EDT

More Information:

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

Extended Forecast for

Olney MD

Overnight
Low: 52 °F
Showers
Monday
High: 71 °F
Showers
Likely then
Severe
Thunderstorms
and Breezy
Monday Night
Low: 28 °F
Rain/Snow
Tuesday
High: 38 °F
Mostly Sunny
Tuesday Night
Low: 23 °F
Mostly Clear
Wednesday
High: 38 °F
Partly Sunny
Wednesday Night
Low: 28 °F
Mostly Cloudy
Thursday
High: 50 °F
Partly Sunny
Thursday Night
Low: 36 °F
Mostly Cloudy

Detailed Forecast

Overnight

Showers, with thunderstorms also possible after 5am. Low around 52. Southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Monday

Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. Some of the storms could be severe and produce heavy rainfall. High near 71. Breezy, with a south wind 15 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Monday Night

Rain showers, possibly mixing with snow after 11pm, then gradually ending. The rain could be heavy at times. Some thunder is also possible. Low around 28. West wind 15 to 17 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Tuesday

Mostly sunny, with a high near 38. West wind 13 to 16 mph, with gusts as high as 29 mph.

Tuesday Night

Mostly clear, with a low around 23. West wind 5 to 10 mph, with gusts as high as 18 mph.

Wednesday

Partly sunny, with a high near 38.

Wednesday Night

Mostly cloudy, with a low around 28.

Thursday

Partly sunny, with a high near 50.

Thursday Night

Mostly cloudy, with a low around 36.