Heavy Rainfall, Flooding, And Severe Thunderstorm Threats From The Mid South To The Great Lakes Today And Tonight

A slow moving low pressure system and cold front will bring the potential for severe thunderstorms capable of producing damaging winds and isolated tornadoes from portions of the Mid South to the Midwest and Great Lakes today and tonight. Heavy rainfall could also lead to flooding concerns. The severe weather threat will shift to the Mid Atlantic and Northeast on Wednesday. Read More >

Current conditions at

Washington/Reagan National Airport, DC (KDCA)

Lat: 38.85°NLon: 77.03°WElev: 13ft.

Mostly Cloudy

78°F

26°C

Humidity 82%
Wind Speed S 6 mph
Barometer 30.13 in (1020.4 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 25 Sep 6:52 pm EDT
Extended Forecast for

Rockville MD

  • Tonight

    Tonight: Patchy fog after 11pm.  Otherwise, mostly cloudy, with a low around 69. South wind around 6 mph.

    Patchy Fog

    Low: 69 °F

  • Wednesday

    Wednesday: A slight chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm.  Patchy fog before 11am.  Otherwise, mostly cloudy, with a high near 83. South wind 6 to 8 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Slight Chance
    Showers and
    Patchy Fog
    then Showers
    Likely

    High: 83 °F

  • Wednesday
    Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am.  Mostly cloudy, with a low around 58. West wind 7 to 9 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Showers
    Likely

    Low: 58 °F

  • Thursday

    Thursday: A chance of showers.  Mostly cloudy, with a high near 69. North wind 5 to 7 mph.  Chance of precipitation is 50%.

    Chance
    Showers

    High: 69 °F

  • Thursday
    Night

    Thursday Night: A chance of showers.  Cloudy, with a low around 59. Light east wind.  Chance of precipitation is 40%.

    Chance
    Showers

    Low: 59 °F

  • Friday

    Friday: A chance of showers.  Mostly cloudy, with a high near 72. Chance of precipitation is 40%.

    Chance
    Showers

    High: 72 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 60.

    Partly Cloudy

    Low: 60 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 73.

    Mostly Sunny

    High: 73 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 54.

    Partly Cloudy

    Low: 54 °F

Detailed Forecast

Tonight
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 69. South wind around 6 mph.
Wednesday
A slight chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 83. South wind 6 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 58. West wind 7 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers. Mostly cloudy, with a high near 69. North wind 5 to 7 mph. Chance of precipitation is 50%.
Thursday Night
A chance of showers. Cloudy, with a low around 59. Light east wind. Chance of precipitation is 40%.
Friday
A chance of showers. Mostly cloudy, with a high near 72. Chance of precipitation is 40%.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Mostly sunny, with a high near 73.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 56.
Monday
Mostly sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
A chance of showers. Partly sunny, with a high near 75. Chance of precipitation is 40%.
Click Map For Forecast
Point Forecast:
Rockville MD
 39.08°N 77.16°W (Elev. 430 ft)
6:11 pm EDT Sep 25, 2018
7pm EDT Sep 25, 2018-6pm EDT Oct 2, 2018
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database