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

Areas of Severe Thunderstorms, Excessive Rainfall, and Extreme Heat Wednesday

In the Upper Midwest, heavy to excessive rain may bring flash and urban flooding through Wednesday. Scattered severe thunderstorms capable of large hail and damaging wind gusts are possible from the central High Plains into the Upper Midwest Wednesday. Extreme heat is ongoing over the Desert Southwest through Thursday. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Light Rain Fog/Mist

73°F

23°C

Humidity 96%
Wind Speed NE 6 mph
Barometer 30.02 in (1016.2 mb)
Dewpoint 72°F (22°C)
Visibility 5.00 mi
Last update 8 Jul 3:52 am EDT
Extended Forecast for

Reston VA

  • Overnight

    Overnight: Scattered showers. Mostly cloudy, with a low around 71. Northeast wind around 5 mph. Chance of precipitation is 30%.

    Low: 71 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers between noon and 2pm. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 82. East wind around 5 mph becoming light and variable. Chance of precipitation is 30%.

    High: 82 °F

    Scattered
    Showers and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Scattered showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 70. South wind 3 to 5 mph. Chance of precipitation is 30%.

    Low: 70 °F

    Mostly Cloudy
    then
    Scattered
    Showers

  • Thursday

    Thursday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 85. South 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.

    High: 85 °F

    Partly Sunny
    then T-storms

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 70. Light west wind. Chance of precipitation is 60%.

    Low: 70 °F

    Showers
    Likely then
    Partly Cloudy

  • Friday

    Friday: Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 70%.

    High: 89 °F

    Sunny then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.

    Low: 69 °F

    Showers
    Likely then
    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 30%.

    High: 84 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms then
    Mostly Cloudy

Detailed Forecast

Overnight
Scattered showers. Mostly cloudy, with a low around 71. Northeast wind around 5 mph. Chance of precipitation is 30%.
Wednesday
Scattered showers between noon and 2pm. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 82. East wind around 5 mph becoming light and variable. Chance of precipitation is 30%.
Wednesday Night
Scattered showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 70. South wind 3 to 5 mph. Chance of precipitation is 30%.
Thursday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 85. South 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 Night
Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 70. Light west wind. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 70%.
Friday Night
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Saturday
A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Sunday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 20%.
Sunday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 20%.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
Sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
Reston VA
 38.95°N 77.36°W (Elev. 446 ft)
Last Update:
2:23 am EDT Jul 8, 2026
Forecast Valid:
4am EDT Jul 8, 2026-6pm EDT Jul 14, 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