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

Baltimore, Inner Harbor (KDMH)

Lat: 39.28°NLon: 76.62°WElev: 20ft.

77°F

25°C

Humidity	79%
Wind Speed	NA
Barometer	30.11 in (1019.6 mb)
Dewpoint	70°F (21°C)
Visibility	NA
Heat Index	79°F (26°C)
Last update	31 Aug 7:53 am EDT

More Information:

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

Extended Forecast for

Marriottsville MD

Today
High: 87 °F
Slight Chance
Showers then
Slight Chance
T-storms
Tonight
Low: 73 °F
Slight Chance
T-storms then
Partly Cloudy
Tuesday
High: 93 °F
Mostly Sunny
then Chance
Showers
Tuesday Night
Low: 74 °F
Chance
T-storms
Wednesday
High: 91 °F
Mostly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 74 °F
Chance
T-storms
Thursday
High: 95 °F
Mostly Sunny
then Chance
T-storms
Thursday Night
Low: 71 °F
Chance
T-storms then
Chance
Showers
Friday
High: 87 °F
Chance
Showers

Detailed Forecast

Today

A slight chance of showers, with thunderstorms also possible after 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 87. Northeast wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 20%.

Tonight

A slight chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 73. Light and variable wind becoming southwest around 5 mph after midnight. Chance of precipitation is 20%.

Tuesday

A chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 93. Heat index values as high as 100. West wind 5 to 9 mph. Chance of precipitation is 40%.

Tuesday Night

A chance of showers and thunderstorms, mainly before 2am. Partly cloudy, with a low around 74. West wind 3 to 5 mph. Chance of precipitation is 40%.

Wednesday

A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Northeast wind around 5 mph becoming light and variable. 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 chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95. Chance of precipitation is 30%.

Thursday Night

A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.

Friday

A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. 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 83.

Saturday Night

Partly cloudy, with a low around 62.

Sunday

Sunny, with a high near 81.