Heavy Rain and Flooding Threat in the Ohio Valley

Gulf moisture will combine with a cold front and will bring heavy rain and scattered flash flooding over parts of the Mid-South into the Ohio Valley through the morning and the Ohio Valley and Central Appalachians on Tuesday. Showers and thunderstorms, some severe, are expected over the Southern Rockies/Southern High Plains on Tuesday. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

68°F

20°C

Humidity	84%
Wind Speed	S 6 mph
Barometer	30.25 in (1025.4 mb)
Dewpoint	63°F (17°C)
Visibility	10.00 mi
Last update	6 Oct 10:56 pm EDT

More Information:

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

Extended Forecast for

Rockville MD

Tonight
Low: 60 °F
Mostly Clear
Tuesday
High: 79 °F
Mostly Sunny
then Slight
Chance
Showers
Tuesday Night
Low: 59 °F
Showers
Likely then
Showers
Wednesday
High: 67 °F
Showers
Wednesday Night
Low: 43 °F
Mostly Clear
Thursday
High: 62 °F
Sunny
Thursday Night
Low: 41 °F
Mostly Clear
Friday
High: 63 °F
Mostly Sunny
Friday Night
Low: 50 °F
Mostly Cloudy

Detailed Forecast

Tonight

Mostly clear, with a low around 60. South wind around 6 mph.

Tuesday

A slight chance of showers after 2pm. Mostly sunny, with a high near 79. South wind 6 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

Tuesday Night

Showers, with thunderstorms also possible after 5am. Low around 59. South wind around 7 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday

Showers and possibly a thunderstorm before 8am, then showers likely between 8am and 2pm. High near 67. Southwest wind 7 to 13 mph becoming north in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Wednesday Night

Mostly clear, with a low around 43. North wind around 9 mph.

Thursday

Sunny, with a high near 62.

Thursday Night

Mostly clear, with a low around 41.

Friday

Mostly sunny, with a high near 63.

Friday Night

Mostly cloudy, with a low around 50.

Saturday

Partly sunny, with a high near 66.