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.

Overcast

26°C

79°F

Humidity 94%
Wind Speed Calm
Barometer 1021.0 mb (30.12 in)
Dewpoint 25°C (77°F)
Visibility 16 km
Heat Index28°C (83°F)
Last update 15 Jul 10:56 am EDT
Extended Forecast for

Rockville MD

  • Today

    Today: A chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 32. Calm wind. Chance of precipitation is 30%.

    High: 32 °C

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Partly cloudy, with a low around 23. Calm wind. Chance of precipitation is 30%.

    Low: 23 °C

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers, then showers and thunderstorms likely after 11am. Mostly cloudy, with a high near 32. South wind 8 to 13 km/h. Chance of precipitation is 70%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.

    High: 32 °C

    Chance
    T-storms then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 23. South wind around 11 km/h. Chance of precipitation is 60%. New rainfall amounts between 2.5 and 5 mm possible.

    Low: 23 °C

    T-storms
    Likely then
    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 34. Southwest wind 11 to 13 km/h. Chance of precipitation is 40%.

    High: 34 °C

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 24. Chance of precipitation is 30%.

    Low: 24 °C

    Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 32. Chance of precipitation is 60%.

    High: 32 °C

    Mostly Sunny
    then Showers
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 22. Chance of precipitation is 60%.

    Low: 22 °C

    Showers
    Likely then
    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 29. Chance of precipitation is 40%.

    High: 29 °C

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 32. Calm wind. Chance of precipitation is 30%.
Tonight
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Partly cloudy, with a low around 23. Calm wind. Chance of precipitation is 30%.
Wednesday
A chance of showers, then showers and thunderstorms likely after 11am. Mostly cloudy, with a high near 32. South wind 8 to 13 km/h. Chance of precipitation is 70%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 23. South wind around 11 km/h. Chance of precipitation is 60%. New rainfall amounts between 2.5 and 5 mm possible.
Thursday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 34. Southwest wind 11 to 13 km/h. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 24. Chance of precipitation is 30%.
Friday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 32. Chance of precipitation is 60%.
Friday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 22. Chance of precipitation is 60%.
Saturday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 29. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 31. Chance of precipitation is 60%.
Sunday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 22. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 31. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Rockville MD
 39.08°N 77.16°W (Elev. 430 m)
Last Update:
10:30 am EDT Jul 15, 2025
Forecast Valid:
11am EDT Jul 15, 2025-6pm EDT Jul 21, 2025
 
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