Dangerous Heat Wave Continues; Areas of Severe Thunderstorms Today

Dangerous, record-breaking heat will continue across most of the central and eastern U.S through Friday then focusing on the eastern U.S. through the Independence Day weekend. Peak heat indices of up to 115 degrees are possible. Strong to severe thunderstorms will be possible from the northern Plains into the Midwest and Great Lakes regions, as well as across the southern Appalachians today. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

A Few Clouds

99°F

37°C

Humidity	42%
Wind Speed	NW 7 mph
Barometer	30.01 in (1016.4 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	109°F (43°C)
Last update	2 Jul 1:55 pm EDT

More Information:

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

Extended Forecast for

Accokeek MD

Extreme Heat Warning July 3, 10:00am until July 3, 08:00pm

Extreme Heat Warning July 4, 10:00am until July 4, 08:00pm

Extreme Heat Warning July 2, 03:31pm until July 2, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

...

Extreme Heat Warning July 2, 03:31pm until July 2, 08:00pm
NOW until 8:00pm Thu
Extreme Heat Warning
Tonight
Low: 79 °F
Clear
Friday
High: 102 °F
Hot
Friday Night
Low: 79 °F
Mostly Clear
Independence Day
High: 102 °F
Sunny then
Chance
T-storms
Saturday Night
Low: 75 °F
Chance
T-storms
Sunday
High: 95 °F
Mostly Sunny
then T-storms
Likely
Sunday Night
Low: 71 °F
T-storms
Likely then
Showers
Likely
Monday
High: 89 °F
Chance
Showers then
Showers
Likely

Detailed Forecast

Tonight

Clear, with a low around 79. West wind around 5 mph becoming light and variable in the evening.

Friday

Sunny and hot, with a high near 102. Heat index values as high as 109. Calm wind becoming west around 5 mph in the afternoon.

Friday Night

Mostly clear, with a low around 79. Light and variable wind.

Independence Day

A chance of showers and thunderstorms after 2pm. Increasing clouds and hot, with a high near 102. Heat index values as high as 108. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 50%.

Saturday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 75. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.

Sunday

Showers and thunderstorms likely after 2pm. Partly sunny, with a high near 95. Chance of precipitation is 60%.

Sunday Night

Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 70%.

Monday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 89. Chance of precipitation is 70%.

Monday Night

Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.

Tuesday

A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 40%.

Tuesday Night

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

Wednesday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 20%.

Wednesday Night

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 20%.

Thursday

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