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

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fog/Mist

18°C

64°F

Humidity 100%
Wind Speed Calm
Barometer 1018.0 mb (30.03 in)
Dewpoint 18°C (64°F)
Visibility 3.22 km
Last update 6 May 2:56 am EDT
Extended Forecast for

Potomac MD

  • Overnight

    Overnight: Areas of fog. Otherwise, cloudy, with a low around 17. South wind around 8 km/h.

    Low: 17 °C

    Areas Fog

  • Monday

    Monday: Scattered showers and thunderstorms, mainly after 4pm. Areas of fog before 11am. Otherwise, cloudy, with a high near 26. South wind 5 to 8 km/h becoming west in the afternoon. Chance of precipitation is 30%.

    High: 26 °C

    Areas Fog
    then
    Scattered
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Patchy fog after 10pm. Low around 17. Calm wind. Chance of precipitation is 80%. New rainfall amounts between 2.5 and 5 mm possible.

    Low: 17 °C

    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, mainly after 11am. Mostly cloudy, with a high near 25. Light north wind becoming northwest 6 to 11 km/h in the afternoon. Chance of precipitation is 50%.

    High: 25 °C

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 18. Southeast wind 5 to 10 km/h becoming southwest after midnight. Chance of precipitation is 30%.

    Low: 18 °C

    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 29. Chance of precipitation is 20%.

    High: 29 °C

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 17. Chance of precipitation is 50%.

    Low: 17 °C

    Partly Cloudy
    then Chance
    T-storms

  • Thursday

    Thursday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 26. Chance of precipitation is 80%.

    High: 26 °C

    Chance
    Showers then
    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 15. Chance of precipitation is 80%.

    Low: 15 °C

    Showers then
    Chance
    T-storms

Detailed Forecast

Overnight
Areas of fog. Otherwise, cloudy, with a low around 17. South wind around 8 km/h.
Monday
Scattered showers and thunderstorms, mainly after 4pm. Areas of fog before 11am. Otherwise, cloudy, with a high near 26. South wind 5 to 8 km/h becoming west in the afternoon. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Patchy fog after 10pm. Low around 17. Calm wind. Chance of precipitation is 80%. New rainfall amounts between 2.5 and 5 mm possible.
Tuesday
A chance of showers and thunderstorms, mainly after 11am. Mostly cloudy, with a high near 25. Light north wind becoming northwest 6 to 11 km/h in the afternoon. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 18. Southeast wind 5 to 10 km/h becoming southwest after midnight. Chance of precipitation is 30%.
Wednesday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 29. Chance of precipitation is 20%.
Wednesday Night
A chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 17. Chance of precipitation is 50%.
Thursday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 26. Chance of precipitation is 80%.
Thursday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 15. Chance of precipitation is 80%.
Friday
A chance of showers after 2pm. Mostly sunny, with a high near 21. Chance of precipitation is 40%.
Friday Night
A chance of showers. Partly cloudy, with a low around 10. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 20.
Saturday Night
A chance of showers. Partly cloudy, with a low around 11. Chance of precipitation is 30%.
Sunday
A chance of showers. Mostly sunny, with a high near 21. Chance of precipitation is 30%.
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Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Potomac MD
 39.02°N 77.2°W (Elev. 381 m)
Last Update:
1:31 am EDT May 6, 2024
Forecast Valid:
3am EDT May 6, 2024-6pm EDT May 12, 2024
 
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