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

67°F

19°C

Humidity 41%
Wind Speed S 15 mph
Barometer 30.28 in (1026.6 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 12 Apr 6:56 pm EDT
Extended Forecast for

Olney MD

  • Tonight

    Tonight: Mostly cloudy, with a low around 57. Southeast wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 57 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers between 4pm and 5pm. Partly sunny, with a high near 81. Southwest wind 11 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    High: 81 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 61. West wind around 6 mph becoming calm after midnight.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers after 2pm. Mostly sunny, with a high near 87. Calm wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 20%.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 65. Southwest wind 3 to 6 mph.

    Low: 65 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 90.

    High: 90 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 57. Southeast wind 9 to 11 mph, with gusts as high as 21 mph.
Monday
A slight chance of showers between 4pm and 5pm. Partly sunny, with a high near 81. Southwest wind 11 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 61. West wind around 6 mph becoming calm after midnight.
Tuesday
A slight chance of showers after 2pm. Mostly sunny, with a high near 87. Calm wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 65. Southwest wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 90.
Wednesday Night
Mostly cloudy, with a low around 66.
Thursday
Partly sunny, with a high near 90.
Thursday Night
Mostly cloudy, with a low around 66.
Friday
Mostly sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 62.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
Mostly cloudy, with a low around 64.
Sunday
A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 40%.
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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:
4:53 pm EDT Apr 12, 2026
Forecast Valid:
7pm EDT Apr 12, 2026-6pm EDT Apr 19, 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