Extreme Heat and Tropical Storm Bertha Impacts

Dangerous heat will expand from the Gulf Coast into the Southern Plains and Desert Southwest through week's end. Additional extreme heat impacting the Pacific Northwest will shift to the northern Plains by the weekend. Tropical Storm Bertha is expected to continue to impact portions of the northern Gulf Coast from the western Florida Panhandle to southeastern Louisiana through tonight. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72° N Lon: 77.18° W Elev: 69 ft.

Partly Cloudy

79°F

26°C

Humidity	83%
Wind Speed	Calm
Barometer	29.86 in (1011.4 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	82°F (28°C)
Last update	22 Jul 8:55 pm EDT

More Information:

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

Detailed forecast for

Fairfax County

Rest Of Tonight

Mostly cloudy. Scattered showers with isolated thunderstorms late this evening, then isolated showers. Lows in the mid 60s. North winds 5 to 10 mph. Chance of rain 50 percent.

Thursday

Sunny. Highs in the upper 70s. North winds 5 to 10 mph.

Thursday Night

Mostly clear. Lows in the lower 60s. Northeast winds around 5 mph in the evening, becoming light and variable.

Friday

Mostly sunny. Highs in the lower 80s. East winds 5 to 10 mph.

Friday Night

Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 60s. Southeast winds around 5 mph in the evening, becoming light and variable.

Saturday

Mostly sunny. Highs in the lower 80s.

Saturday Night

Partly cloudy. Lows in the mid 60s.

Sunday

Mostly sunny with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 30 percent.

Sunday Night

Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 30 percent.

Monday

Mostly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 40 percent.

Monday Night

Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 40 percent.