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

Thunderstorms and Heavy Rainfall in the Southeast, Montana, and Iowa; Lowell Begins to Impact Hawaii

Strong thunderstorms with damaging winds and heavy rain are expected across portions of the Southeast. Thunderstorms may produce large hail across portions of Montana. Heavy rainfall could produce flash flooding across Iowa and vulnerable areas in Utah. Lowell will bring heavy rain, dangerous swells and rip currents to portions of Hawaii. Sweltering heat persists across the South-Central US. Read More >

Current conditions at

Washington/Reagan National Airport, DC (KDCA)

Lat: 38.85°NLon: 77.03°WElev: 13ft.

Partly Cloudy

84°F

29°C

Humidity 41%
Wind Speed N 6 mph
Barometer 29.95 in (1014.2 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 6 Sep 2:52 pm EDT
Extended Forecast for

Washington DC, Reagan National Airport VA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 85. Northeast wind around 9 mph.

    High: 85 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 65. Northeast wind around 7 mph.

    Low: 65 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 84. North wind around 7 mph becoming east in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming clear, with a low around 64. Southeast wind 5 to 7 mph becoming calm in the evening.

    Low: 64 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 86. Southwest wind 5 to 7 mph.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 50%.

    High: 90 °F

    Sunny then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 85. Northeast wind around 9 mph.
Tonight
Partly cloudy, with a low around 65. Northeast wind around 7 mph.
Labor Day
Mostly sunny, with a high near 84. North wind around 7 mph becoming east in the afternoon.
Monday Night
Mostly cloudy, then gradually becoming clear, with a low around 64. Southeast wind 5 to 7 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 86. Southwest wind 5 to 7 mph.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.
Friday
A slight chance of showers. Mostly sunny, with a high near 81. Chance of precipitation is 20%.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 67. Chance of precipitation is 20%.
Saturday
A slight chance of showers. Mostly sunny, with a high near 85. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Washington DC, Reagan National Airport VA
 38.84°N 77.03°W (Elev. 3 ft)
Last Update:
2:22 pm EDT Sep 6, 2026
Forecast Valid:
2pm EDT Sep 6, 2026-6pm EDT Sep 12, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation