Severe Thunderstorms in Portions of the Mississippi Valley and Great Lakes

A few severe thunderstorms with large hail, are expected across parts of the middle and upper Mississippi River Valley tonight through early morning. Snow and a wintry mix overnight in the Upper Midwest into the Great Lakes can cause hazardous travel conditions. Fire weather concerns continue for a large portion of the central and southern High Plains and Four Corners region this evening. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

65°F

18°C

Humidity	61%
Wind Speed	SW 7 G 16 mph
Barometer	30.14 in (1022.0 mb)
Dewpoint	51°F (11°C)
Visibility	10.00 mi
Last update	30 Mar 11:56 pm EDT

More Information:

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

Extended Forecast for

Olney MD

Overnight
Low: 57 °F
Partly Cloudy
Tuesday
High: 80 °F
Mostly Sunny
Tuesday Night
Low: 63 °F
Partly Cloudy
Wednesday
High: 82 °F
Mostly Sunny
then Showers
Likely
Wednesday Night
Low: 59 °F
Showers
Likely
Thursday
High: 73 °F
Chance
Showers
Thursday Night
Low: 57 °F
Chance
Showers then
Mostly Cloudy
Friday
High: 80 °F
Partly Sunny
Friday Night
Low: 62 °F
Mostly Cloudy

Detailed Forecast

Overnight

Partly cloudy, with a low around 57. Southwest wind 8 to 10 mph, with gusts as high as 21 mph.

Tuesday

Mostly sunny, with a high near 80. Southwest wind 10 to 14 mph, with gusts as high as 23 mph.

Tuesday Night

Partly cloudy, with a low around 63. Southwest wind around 11 mph, with gusts as high as 22 mph.

Wednesday

Showers likely after 2pm. Partly sunny, with a high near 82. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday Night

Showers likely, mainly before 2am. Mostly cloudy, with a low around 59. Southwest wind around 6 mph becoming east after midnight. Chance of precipitation is 60%.

Thursday

A chance of showers, mainly after 2pm. Partly sunny, with a high near 73. Chance of precipitation is 30%.

Thursday Night

A chance of showers before 8pm. Mostly cloudy, with a low around 57. Chance of precipitation is 30%.

Friday

Partly sunny, with a high near 80.

Friday Night

Mostly cloudy, with a low around 62.

Saturday

A chance of showers after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 40%.

Saturday Night

A chance of showers. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.