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

Isolated Severe Storms in the Midwest; Fire Weather Concerns in the Northern Plains; Record Heat in the West

Isolated severe storms are possible across parts of the Florida Peninsula and the Great Lakes to Lower Missouri Valley and south-central Plains late this afternoon and early evening. Elevated to critical fire weather concerns continue over much of the northern Great Plains. Above average temperatures persist across portions of the West today. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

61°F

16°C

Humidity 35%
Wind Speed Calm
Barometer 30.26 in (1025.9 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 12 May 10:56 am EDT
Extended Forecast for

Derwood MD

  • Today

    Today: Sunny, with a high near 70. Calm wind becoming west around 5 mph in the afternoon.

    High: 70 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 54. Southeast wind 5 to 10 mph, with gusts as high as 22 mph.

    Low: 54 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 5pm. Increasing clouds, with a high near 73. South wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Mostly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms. Low around 51. South wind 5 to 8 mph becoming west after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 64. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 64 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 70. Calm wind becoming west around 5 mph in the afternoon.
Tonight
Partly cloudy, with a low around 54. Southeast wind 5 to 10 mph, with gusts as high as 22 mph.
Wednesday
Showers likely, with thunderstorms also possible after 5pm. Increasing clouds, with a high near 73. South wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and thunderstorms. Low around 51. South wind 5 to 8 mph becoming west after midnight. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Mostly sunny, with a high near 64. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Thursday Night
Partly cloudy, with a low around 48.
Friday
Mostly sunny, with a high near 72.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
Partly cloudy, with a low around 61.
Sunday
Sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 64.
Monday
Mostly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Derwood MD
 39.14°N 77.12°W (Elev. 400 ft)
Last Update:
10:54 am EDT May 12, 2026
Forecast Valid:
11am EDT May 12, 2026-6pm EDT May 18, 2026
 
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