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 >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

College Park Airport (KCGS)

Lat: 38.98°NLon: 76.92°WElev: 49ft.

Fair

84°F

29°C

Humidity	67%
Wind Speed	E 5 mph
Barometer	30.07 in
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	90°F (32°C)
Last update	31 Aug 6:55 pm EDT

More Information:

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

Extended Forecast for

Lanham MD

Tonight
Low: 73 °F
Slight Chance
T-storms then
Mostly Cloudy
Tuesday
High: 96 °F
Mostly Sunny
then Slight
Chance
T-storms
Tuesday Night
Low: 76 °F
Chance
T-storms
Wednesday
High: 94 °F
Mostly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 75 °F
Chance
T-storms
Thursday
High: 97 °F
Sunny then
Slight Chance
T-storms
Thursday Night
Low: 76 °F
Slight Chance
T-storms
Friday
High: 91 °F
Mostly Sunny
then Chance
T-storms
Friday Night
Low: 70 °F
Chance
T-storms

Detailed Forecast

Tonight

A slight chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 73. Light and variable wind. Chance of precipitation is 20%.

Tuesday

A slight chance of showers before 4pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 96. Heat index values as high as 101. Calm wind becoming west 5 to 7 mph in the morning. Chance of precipitation is 20%.

Tuesday Night

A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 76. Light and variable wind. Chance of precipitation is 30%.

Wednesday

A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Heat index values as high as 102. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 20%.

Wednesday Night

A chance of showers and thunderstorms, mainly between 8pm and 2am. Partly cloudy, with a low around 75. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

Thursday

A slight chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 97. Chance of precipitation is 20%.

Thursday Night

A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 76. Chance of precipitation is 20%.

Friday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 30%.

Friday Night

A chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 70. Chance of precipitation is 30%.

Saturday

Mostly sunny, with a high near 85.

Saturday Night

Partly cloudy, with a low around 64.