Tropical Storm Fay in the Atlantic; Severe Storms in the Plains; Excessive Heat and Fire Weather Threats in the West

Summer is in full swing! Tropical Storm Fay will bring heavy rain with flash flood potential, and isolated tornadoes to the Mid-Atlantic and New England. Severe storms in the Plains may produce intense winds, very large hail, and locally heavy rain. Excessive heat 110 to 121 F is possible in the Desert Southwest into early next week. Critical fire weather threats continue for portions of the West. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

71°F

22°C

Humidity 94%
Wind Speed Calm
Barometer 29.95 in (1015.2 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 10 Jul 2:56 am EDT
Extended Forecast for

Derwood MD

  • Overnight

    Overnight: Mostly cloudy, with a low around 72. Northeast wind around 6 mph.

    Mostly Cloudy

    Low: 72 °F

  • Friday

    Friday: Scattered showers, with thunderstorms also possible after 2pm.  Partly sunny, with a high near 87. North wind 8 to 10 mph.  Chance of precipitation is 50%.

    Scattered
    Showers

    High: 87 °F

  • Friday
    Night

    Friday Night: A slight chance of showers and thunderstorms.  Partly cloudy, with a low around 73. North wind around 6 mph becoming light and variable.  Chance of precipitation is 20%.

    Slight Chance
    T-storms

    Low: 73 °F

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 8am.  Partly sunny, with a high near 91. West wind 5 to 8 mph.  Chance of precipitation is 30%.

    Chance
    T-storms

    High: 91 °F

  • Saturday
    Night

    Saturday Night: A chance of showers and thunderstorms, mainly before 8pm.  Partly cloudy, with a low around 71. West wind around 6 mph.  Chance of precipitation is 30%.

    Chance
    T-storms

    Low: 71 °F

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 91. Chance of precipitation is 20%.

    Mostly Sunny
    then Slight
    Chance
    T-storms

    High: 91 °F

  • Sunday
    Night

    Sunday Night: A chance of showers after 2am.  Partly cloudy, with a low around 70. Chance of precipitation is 30%.

    Partly Cloudy
    then Chance
    Showers

    Low: 70 °F

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 8am.  Mostly sunny, with a high near 90. Chance of precipitation is 50%.

    Chance
    T-storms

    High: 90 °F

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 69.

    Partly Cloudy

    Low: 69 °F

Detailed Forecast

Overnight
Mostly cloudy, with a low around 72. Northeast wind around 6 mph.
Friday
Scattered showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 87. North wind 8 to 10 mph. Chance of precipitation is 50%.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. North wind around 6 mph becoming light and variable. Chance of precipitation is 20%.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 8am. Partly sunny, with a high near 91. West wind 5 to 8 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 71. West wind around 6 mph. Chance of precipitation is 30%.
Sunday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 20%.
Sunday Night
A chance of showers after 2am. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
Monday
A chance of showers, with thunderstorms also possible after 8am. Mostly sunny, with a high near 90. Chance of precipitation is 50%.
Monday Night
Partly cloudy, with a low around 69.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 70.
Wednesday
Sunny, with a high near 92.
Wednesday Night
Mostly clear, with a low around 73.
Thursday
Mostly sunny, with a high near 95.
Click Map For Forecast
Point Forecast:
Derwood MD
 39.14°N 77.12°W (Elev. 400 ft)
2:52 am EDT Jul 10, 2020
3am EDT Jul 10, 2020-6pm EDT Jul 16, 2020
 
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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