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

Widespread Showers in the Eastern US; Severe Thunderstorms in the Plains; Heatwave in the Desert Southwest

Widespread showers and thunderstorms across much of the central and eastern U.S. will produce areas of excessive rainfall, especially in the southern Mid-Atlantic states. Scattered severe thunderstorms are expected from Montana into portions of the central/southern Plains this weekend. A heatwave will build in the Desert Southwest, in parts of Arizona, southeastern California, and southern Nevada. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

A Few Clouds

88°F

31°C

Humidity 50%
Wind Speed SE 8 mph
Barometer 30.06 in (1018.6 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 13 Jun 1:56 pm EDT
Extended Forecast for

Rockville MD

Flood Watch June 13, 06:00pm until June 14, 02:00am
Click here for hazard details and duration
Flood Watch

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms, mainly after 3pm. Mostly cloudy, with a high near 88. Southeast wind around 6 mph. Chance of precipitation is 40%.

    High: 88 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 2am, then areas of drizzle and thunderstorms after 5am. Patchy fog between 11pm and 3am. Otherwise, cloudy, with a low around 69. East wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.

    Low: 69 °F

    T-storms
    Likely and
    Patchy Fog

  • Saturday

    Saturday: Areas of drizzle before 11am, then a slight chance of showers between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 80. Light and variable wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Areas Drizzle
    then Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Cloudy, with a low around 65. East wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Cloudy, with a high near 72. East wind 6 to 8 mph. Chance of precipitation is 70%.

    High: 72 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 80%.

    Low: 64 °F

    Showers

  • Monday

    Monday: Showers likely. Mostly cloudy, with a high near 74. Chance of precipitation is 60%.

    High: 74 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers before 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers after 2pm. Mostly cloudy, with a high near 81. Chance of precipitation is 40%.

    High: 81 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, mainly after 3pm. Mostly cloudy, with a high near 88. Southeast wind around 6 mph. Chance of precipitation is 40%.
Tonight
Showers and thunderstorms likely, mainly before 2am, then areas of drizzle and thunderstorms after 5am. Patchy fog between 11pm and 3am. Otherwise, cloudy, with a low around 69. East wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.
Saturday
Areas of drizzle before 11am, then a slight chance of showers between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 80. Light and variable wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Cloudy, with a low around 65. East wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Cloudy, with a high near 72. East wind 6 to 8 mph. Chance of precipitation is 70%.
Sunday Night
Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 80%.
Monday
Showers likely. Mostly cloudy, with a high near 74. Chance of precipitation is 60%.
Monday Night
A chance of showers before 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
Tuesday
A chance of showers after 2pm. Mostly cloudy, with a high near 81. Chance of precipitation is 40%.
Tuesday Night
A chance of showers before 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 89. Chance of precipitation is 40%.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Juneteenth
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rockville MD
 39.08°N 77.16°W (Elev. 430 ft)
Last Update:
1:29 pm EDT Jun 13, 2025
Forecast Valid:
2pm EDT Jun 13, 2025-6pm EDT Jun 19, 2025
 
Forecast Discussion
 
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Additional Resources

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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