Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

69°F

21°C

Humidity	100%
Wind Speed	Calm
Barometer	30.29 in (1026.5 mb)
Dewpoint	69°F (21°C)
Visibility	10.00 mi
Last update	17 Sep 1:56 am EDT

More Information:

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

Extended Forecast for

Clarksville MD

Overnight
Low: 65 °F
Partly Cloudy
Thursday
High: 86 °F
Chance
Showers
Thursday Night
Low: 69 °F
Chance
T-storms then
Slight Chance
Showers
Friday
High: 82 °F
Mostly Sunny
Friday Night
Low: 60 °F
Mostly Clear
Saturday
High: 77 °F
Mostly Sunny
Saturday Night
Low: 64 °F
Mostly Cloudy
Sunday
High: 82 °F
Slight Chance
Showers then
Showers
Likely
Sunday Night
Low: 62 °F
Showers
Likely

Detailed Forecast

Overnight

Partly cloudy, with a low around 65. Calm wind.

Thursday

A chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 86. South wind 3 to 6 mph. Chance of precipitation is 30%.

Thursday Night

A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 1am. Mostly cloudy, with a low around 69. Light and variable wind. Chance of precipitation is 40%.

Friday

Mostly sunny, with a high near 82. North wind around 9 mph.

Friday Night

Mostly clear, with a low around 60. Northeast wind around 7 mph.

Saturday

Mostly sunny, with a high near 77.

Saturday Night

Mostly cloudy, with a low around 64.

Sunday

A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.

Sunday Night

Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.

Monday

A chance of showers, mainly after 8am. Partly sunny, with a high near 72. Chance of precipitation is 30%.

Monday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.

Tuesday

A chance of showers and thunderstorms. Mostly cloudy, with a high near 69. Chance of precipitation is 40%.

Tuesday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.

Wednesday

A chance of showers. Mostly cloudy, with a high near 68. Chance of precipitation is 30%.