Severe Thunderstorms and Heavy Rain Across the Central US and Central Appalachians

Severe thunderstorms producing damaging winds, hail and possibly a few tornadoes are expected across parts of the central Plains and the Missouri Valley. Heavy rainfall and flash flooding is also expected in the area. Thunderstorms and heavy rain may also bring additional flooding impacts to the central Appalachians. High temperatures and critical fire weather conditions expected in the Southwest. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fog/Mist

70°F

21°C

Humidity	NA
Wind Speed	NA
Barometer	30.04 in (1018.4 mb)
Dewpoint	N/A
Visibility	3.00 mi
Last update	17 Jun 10:56 am EDT

More Information:

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

Extended Forecast for

Olney MD

Flood Watch June 17, 05:00pm until June 18, 12:00am

Click here for hazard details and duration

Flood Watch

Today
High: 80 °F
Chance
T-storms
Tonight
Low: 70 °F
Chance
T-storms
Wednesday
High: 89 °F
Chance
Showers then
Showers
Wednesday Night
Low: 72 °F
Showers then
Mostly Clear
Juneteenth
High: 91 °F
Sunny then
Showers
Likely
Thursday Night
Low: 65 °F
Showers
Likely then
Slight Chance
Showers
Friday
High: 86 °F
Sunny
Friday Night
Low: 67 °F
Partly Cloudy
Saturday
High: 90 °F
Mostly Sunny

Detailed Forecast

Today

A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 80. South wind around 7 mph. Chance of precipitation is 30%.

Tonight

A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 70. Southeast wind 3 to 5 mph. Chance of precipitation is 40%.

Wednesday

A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 89. Southwest wind 5 to 9 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

Showers and possibly a thunderstorm before 8pm. Low around 72. Southwest wind 3 to 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Juneteenth

Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 91. Southwest wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

Thursday Night

Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 65. Chance of precipitation is 60%.

Friday

Sunny, with a high near 86.

Friday Night

Partly cloudy, with a low around 67.

Saturday

Mostly sunny, with a high near 90.

Saturday Night

Partly cloudy, with a low around 72.

Sunday

Mostly sunny, with a high near 94.

Sunday Night

Mostly clear, with a low around 75.