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

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

63°F

17°C

Humidity 73%
Wind Speed Calm
Barometer 29.63 in (1004.3 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 23 Mar 12:56 am EDT
Extended Forecast for

Gaithersburg MD

  • Overnight

    Overnight: Scattered showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 51. North wind 8 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Showers

  • Monday

    Monday: Showers, mainly before 9am. High near 57. North wind 9 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 57 °F

    Showers then
    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 31. Northwest wind 9 to 14 mph, with gusts as high as 25 mph.

    Low: 31 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 50. North wind 5 to 7 mph becoming light and variable in the morning.

    High: 50 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36. Calm wind becoming south around 6 mph after midnight.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 66.

    High: 66 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Rain likely, mainly after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.

    Low: 49 °F

    Chance Rain
    then Rain
    Likely

Detailed Forecast

Overnight
Scattered showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 51. North wind 8 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Showers, mainly before 9am. High near 57. North wind 9 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Mostly clear, with a low around 31. Northwest wind 9 to 14 mph, with gusts as high as 25 mph.
Tuesday
Mostly sunny, with a high near 50. North wind 5 to 7 mph becoming light and variable in the morning.
Tuesday Night
Mostly cloudy, with a low around 36. Calm wind becoming south around 6 mph after midnight.
Wednesday
Partly sunny, with a high near 61.
Wednesday Night
Mostly cloudy, with a low around 44.
Thursday
Mostly cloudy, with a high near 66.
Thursday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.
Friday
Rain likely, mainly before 8am. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.
Friday Night
Partly cloudy, with a low around 29.
Saturday
Sunny, with a high near 47.
Saturday Night
Mostly clear, with a low around 31.
Sunday
Sunny, with a high near 55.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Gaithersburg MD
 39.15°N 77.21°W (Elev. 443 ft)
Last Update:
10:53 pm EDT Mar 22, 2026
Forecast Valid:
1am EDT Mar 23, 2026-6pm EDT Mar 29, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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