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

Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Fair

95°F

35°C

Humidity 36%
Wind Speed SW 6 mph
Barometer 30.06 in (1018.1 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 19 May 1:55 pm EDT
Extended Forecast for

2 Miles WNW Lorton VA

  • This Afternoon

    This Afternoon: A slight chance of showers and thunderstorms. Mostly sunny and hot, with a high near 97. Southwest wind around 9 mph. Chance of precipitation is 20%.

    High: 97 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 73. South wind around 6 mph.

    Low: 73 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: A chance of showers and thunderstorms between 2pm and 5pm, then showers and possibly a thunderstorm after 5pm. High near 96. Light southwest wind becoming west 5 to 10 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 96 °F

    Sunny then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Low around 59. North wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Showers

  • Thursday

    Thursday: Showers, with thunderstorms also possible after 5pm. High near 67. Northeast wind 8 to 11 mph. Chance of precipitation is 80%.

    High: 67 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely after 8pm. Cloudy, with a low around 52. Chance of precipitation is 70%.

    Low: 52 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: Showers, with thunderstorms also possible after 2pm. High near 63. Chance of precipitation is 80%.

    High: 63 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm, then showers after 8pm. Low around 52. Chance of precipitation is 80%.

    Low: 52 °F

    Showers

  • Saturday

    Saturday: Showers. High near 68. Chance of precipitation is 80%.

    High: 68 °F

    Showers

Detailed Forecast

This Afternoon
A slight chance of showers and thunderstorms. Mostly sunny and hot, with a high near 97. Southwest wind around 9 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 73. South wind around 6 mph.
Wednesday
A chance of showers and thunderstorms between 2pm and 5pm, then showers and possibly a thunderstorm after 5pm. High near 96. Light southwest wind becoming west 5 to 10 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Low around 59. North wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers, with thunderstorms also possible after 5pm. High near 67. Northeast wind 8 to 11 mph. Chance of precipitation is 80%.
Thursday Night
A chance of showers and thunderstorms, then showers likely after 8pm. Cloudy, with a low around 52. Chance of precipitation is 70%.
Friday
Showers, with thunderstorms also possible after 2pm. High near 63. Chance of precipitation is 80%.
Friday Night
Showers likely and possibly a thunderstorm, then showers after 8pm. Low around 52. Chance of precipitation is 80%.
Saturday
Showers. High near 68. Chance of precipitation is 80%.
Saturday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Sunday
Showers likely. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Memorial Day
A chance of showers and thunderstorms. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
Tuesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Lorton VA
 38.71°N 77.28°W (Elev. 213 ft)
Last Update:
2:22 pm EDT May 19, 2026
Forecast Valid:
3pm EDT May 19, 2026-6pm EDT May 26, 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