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.

Fair

83°F

28°C

Humidity	83%
Wind Speed	Calm
Barometer	30.03 in (1017.1 mb)
Dewpoint	78°F (26°C)
Visibility	10.00 mi
Heat Index	92°F (33°C)
Last update	2 Jul 7:55 am EDT

More Information:

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

Extended Forecast for

Accokeek MD

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

Extreme Heat Warning until July 2, 08:00pm

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

Click here for hazard details and duration

Extreme Heat Watch

Extreme Heat Warning

Extreme Heat Warning until July 2, 08:00pm
NOW until 8:00pm Thu
Extreme Heat Warning
Today
High: 101 °F
Hot
Tonight
Low: 79 °F
Clear
Friday
High: 102 °F
Sunny then
Slight Chance
T-storms
Friday Night
Low: 79 °F
Mostly Clear
Independence Day
High: 100 °F
Sunny then
Chance
T-storms
Saturday Night
Low: 76 °F
Chance
T-storms
Sunday
High: 96 °F
Mostly Sunny
then Showers
Likely
Sunday Night
Low: 73 °F
Showers
Likely

Detailed Forecast

Today

Sunny and hot, with a high near 101. Heat index values as high as 111. Calm wind becoming west around 5 mph in the afternoon.

Tonight

Clear, with a low around 79. South wind 5 to 7 mph becoming calm after midnight.

Friday

A slight chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 102. Heat index values as high as 111. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 20%.

Friday Night

Mostly clear, with a low around 79. Light west wind.

Independence Day

A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 100. Calm wind becoming west around 6 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 76. Chance of precipitation is 50%.

Sunday

Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 96. Chance of precipitation is 60%.

Sunday Night

Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

Monday

A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 70%.

Monday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

Tuesday

A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 30%.

Tuesday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 30%.

Wednesday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81. Chance of precipitation is 20%.