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.

Fair

54°F

12°C

Humidity 62%
Wind Speed Calm
Barometer 30.02 in (1017.9 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 9 Mar 10:56 pm EDT
Extended Forecast for

Olney MD

  • Tonight

    Tonight: Mostly clear, with a low around 47. Light and variable wind.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 76. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 76 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59. Light south wind.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 77. Light south wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 50%.

    High: 77 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 43. South wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.

    Low: 43 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 52. Breezy. Chance of precipitation is 60%.

    High: 52 °F

    Showers
    Likely and
    Breezy

  • Thursday Night

    Thursday Night: A chance of showers before 8pm. Partly cloudy, with a low around 30. Chance of precipitation is 30%.

    Low: 30 °F

    Chance
    Showers then
    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 52.

    High: 52 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 47. Light and variable wind.
Tuesday
Sunny, with a high near 76. Calm wind becoming south 5 to 7 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 59. Light south wind.
Wednesday
A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 77. Light south wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 50%.
Wednesday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 43. South wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Thursday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 52. Breezy. Chance of precipitation is 60%.
Thursday Night
A chance of showers before 8pm. Partly cloudy, with a low around 30. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 52.
Friday Night
Mostly cloudy, with a low around 39.
Saturday
Partly sunny, with a high near 55.
Saturday Night
Mostly cloudy, with a low around 40.
Sunday
Mostly cloudy, with a high near 65.
Sunday Night
Showers likely. Mostly cloudy, with a low around 44. Chance of precipitation is 60%.
Monday
Showers likely. Mostly cloudy, with a high near 52. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Olney MD
 39.16°N 77.06°W (Elev. 486 ft)
Last Update:
10:53 pm EDT Mar 9, 2026
Forecast Valid:
11pm EDT Mar 9, 2026-6pm EDT Mar 16, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation