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

Critical Fire Weather Conditions and Severe Thunderstorms Today

Scattered severe thunderstorms are possible across portions of the northern High Plains this afternoon and evening. Severe wind gusts are the primary hazard. Gusty winds and low relative humidity will contribute to critical fire weather conditions across parts of the northern Great Plains and Great Basin today and the southern High Plains on Thursday. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Overcast

67°F

19°C

Humidity 59%
Wind Speed S 8 mph
Barometer 29.81 in (1010.6 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 13 May 4:56 pm EDT
Extended Forecast for

Sandy Spring MD

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 74. Southwest wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Low around 50. South wind 5 to 8 mph becoming light and variable. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 50 °F

    Showers then
    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 63. Northwest wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 63 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48. Northwest wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 48 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 71. Northwest wind 11 to 13 mph, with gusts as high as 22 mph.

    High: 71 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 84.

    High: 84 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 74. Southwest wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Low around 50. South wind 5 to 8 mph becoming light and variable. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Mostly sunny, with a high near 63. Northwest wind 10 to 14 mph, with gusts as high as 22 mph.
Thursday Night
Partly cloudy, with a low around 48. Northwest wind 9 to 11 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 71. Northwest wind 11 to 13 mph, with gusts as high as 22 mph.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 62.
Sunday
Partly sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 64.
Monday
Sunny, with a high near 87.
Monday Night
Mostly clear, with a low around 66.
Tuesday
Sunny, with a high near 90.
Tuesday Night
Partly cloudy, with a low around 70.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sandy Spring MD
 39.16°N 77.06°W (Elev. 486 ft)
Last Update:
4:53 pm EDT May 13, 2026
Forecast Valid:
5pm EDT May 13, 2026-6pm EDT May 20, 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