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

Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Partly Cloudy

89°F

32°C

Humidity 60%
Wind Speed SE 5 mph
Barometer 29.83 in (1010.4 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 17 Aug 6:55 pm EDT
Extended Forecast for

La Plata MD

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 70. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 70 °F

    Scattered
    Showers then
    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers after 2pm. Mostly cloudy, with a high near 80. Northeast wind 7 to 10 mph. Chance of precipitation is 20%.

    High: 80 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers, mainly before 2am. Mostly cloudy, with a low around 66. Northeast wind 6 to 8 mph. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, mainly between 8am and 2pm. Mostly cloudy, with a high near 78. East wind around 8 mph. Chance of precipitation is 30%.

    High: 78 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 66. East wind 3 to 6 mph.

    Low: 66 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 20%.

    High: 82 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Tonight
Scattered showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 70. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Monday
A slight chance of showers after 2pm. Mostly cloudy, with a high near 80. Northeast wind 7 to 10 mph. Chance of precipitation is 20%.
Monday Night
A chance of showers, mainly before 2am. Mostly cloudy, with a low around 66. Northeast wind 6 to 8 mph. Chance of precipitation is 30%.
Tuesday
A chance of showers, mainly between 8am and 2pm. Mostly cloudy, with a high near 78. East wind around 8 mph. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 66. East wind 3 to 6 mph.
Wednesday
A slight chance of showers after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 64.
Friday
Mostly sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
A chance of showers. Partly sunny, with a high near 85. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
La Plata MD
 38.53°N 76.97°W (Elev. 148 ft)
Last Update:
5:23 pm EDT Aug 17, 2025
Forecast Valid:
7pm EDT Aug 17, 2025-6pm EDT Aug 24, 2025
 
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