Heavy Rainfall and Severe Thunderstorm Threats; Heat Risk Expands; Monitoring the Tropics

Flash flooding risks continue for portions of the Four Corners and Great Basin through today. Severe thunderstorms are outlooked from the eastern Great Lakes, southern New England into the mid-Atlantic through Tuesday. Heat risk increases and expands across the center of the nation and across the Ohio Valley and mid-Atlantic this week. Continue to closely monitor tropical development in the Gulf. Read More >

Current conditions at

Frederick Municipal Airport (KFDK)

Lat: 39.42°NLon: 77.37°WElev: 269ft.

Overcast

72°F

22°C

Humidity	100%
Wind Speed	Calm
Barometer	30.14 in
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Last update	31 Aug 7:47 am EDT

More Information:

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

Extended Forecast for

Rosemont MD

Today
High: 88 °F
Slight Chance
Showers then
Slight Chance
T-storms
Tonight
Low: 72 °F
Chance
Showers then
Partly Cloudy
Tuesday
High: 94 °F
Mostly Sunny
then Chance
Showers
Tuesday Night
Low: 73 °F
Chance
Showers
Wednesday
High: 95 °F
Mostly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 74 °F
Chance
T-storms then
Chance
Showers
Thursday
High: 96 °F
Sunny then
Slight Chance
T-storms
Thursday Night
Low: 70 °F
Chance
T-storms
Friday
High: 88 °F
Chance
Showers

Detailed Forecast

Today

A slight chance of showers, with thunderstorms also possible after 2pm. Cloudy through mid morning, then becoming mostly sunny, with a high near 88. Light and variable wind. Chance of precipitation is 20%.

Tonight

A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 72. Light southeast wind. Chance of precipitation is 30%.

Tuesday

A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Heat index values as high as 101. West wind 3 to 8 mph. Chance of precipitation is 30%.

Tuesday Night

A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 73. West wind 3 to 5 mph. Chance of precipitation is 30%.

Wednesday

A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95. Light and variable wind. Chance of precipitation is 20%.

Wednesday Night

A chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers. Partly cloudy, with a low around 74. Chance of precipitation is 30%.

Thursday

A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Chance of precipitation is 20%.

Thursday Night

A chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers. Partly cloudy, with a low around 70. Chance of precipitation is 30%.

Friday

A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 30%.

Friday Night

A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 64. Chance of precipitation is 30%.

Saturday

Mostly sunny, with a high near 84.

Saturday Night

Partly cloudy, with a low around 62.

Sunday

Sunny, with a high near 81.