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

Extreme Heat Continues; Severe Thunderstorms into Upper Midwest; Strong Bering Sea Storm

Wildfires and poor air quality continue for the Pacific Northwest, Rockies and extended into the Plains. Severe thunderstorms possible for the northern Plains and upper Midwest on Monday along a frontal boundary. Another boundary will focus showers and thunderstorms for the eastern seaboard with localized heavy rainfall possible. For Alaska, a strong Bering Sea storm will bring winds and rainfall. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Overcast

73°F

23°C

Humidity NA
Wind Speed S 7 mph
Barometer 29.78 in (1009.3 mb)
Dewpoint N/A
Visibility 10.00 mi
Last update 2 Aug 11:56 pm EDT
Extended Forecast for

2 Miles ESE Potomac MD

  • Overnight

    Overnight: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 73. South wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 85. Southwest wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Mostly cloudy, with a low around 67. Light north wind. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 85. East wind around 5 mph.

    High: 85 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers. Mostly cloudy, with a low around 69. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 69 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 30%.

    High: 87 °F

    Partly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 30%.

    High: 89 °F

    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 73. Chance of precipitation is 30%.

    Low: 73 °F

    Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Overnight
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Cloudy, with a low around 73. South wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 85. Southwest wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Mostly cloudy, with a low around 67. Light north wind. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 85. East wind around 5 mph.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 69. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 73. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 40%.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 89. Chance of precipitation is 60%.
Saturday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Potomac MD
 39.02°N 77.18°W (Elev. 249 ft)
Last Update:
10:53 pm EDT Aug 2, 2026
Forecast Valid:
12am EDT Aug 3, 2026-6pm EDT Aug 9, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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