National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Fair

77°F

25°C

Humidity 70%
Wind Speed SE 8 mph
Barometer 29.72 in (1006.6 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 17 Jun 9:55 pm EDT
Extended Forecast for

La Plata MD

  • Tonight

    Tonight: Partly cloudy, with a low around 71. South wind 8 to 10 mph, with gusts as high as 18 mph.

    Low: 71 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 94. Breezy, with a south wind 15 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 50%.

    High: 94 °F

    Breezy.
    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, mainly between 2am and 5am, then a slight chance of thunderstorms after 5am. Mostly cloudy, with a low around 69. West wind 3 to 8 mph. Chance of precipitation is 40%.

    Low: 69 °F

    Chance
    T-storms then
    Chance
    Showers

  • Juneteenth

    Juneteenth: A slight chance of showers between 8am and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 85. Light west wind becoming northwest 5 to 10 mph in the morning. Chance of precipitation is 20%.

    High: 85 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 63. Northwest wind around 6 mph.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: A chance of showers after 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.

    Low: 66 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 71. South wind 8 to 10 mph, with gusts as high as 18 mph.
Thursday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 94. Breezy, with a south wind 15 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms, mainly between 2am and 5am, then a slight chance of thunderstorms after 5am. Mostly cloudy, with a low around 69. West wind 3 to 8 mph. Chance of precipitation is 40%.
Juneteenth
A slight chance of showers between 8am and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 85. Light west wind becoming northwest 5 to 10 mph in the morning. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 63. Northwest wind around 6 mph.
Saturday
Sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 63.
Sunday
Sunny, with a high near 87.
Sunday Night
A chance of showers after 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.
Monday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 87. Chance of precipitation is 80%.
Monday Night
Showers and thunderstorms. Low around 64. Chance of precipitation is 80%.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 85. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
Mostly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
La Plata MD
 38.53°N 76.97°W (Elev. 148 ft)
Last Update:
7:53 pm EDT Jun 17, 2026
Forecast Valid:
10pm EDT Jun 17, 2026-6pm EDT Jun 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation