Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

44°F

7°C

Humidity 35%
Wind Speed E 3 mph
Barometer 30.46 in (1033.4 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 24 Mar 11:56 am EDT
Extended Forecast for

Olney MD

  • This Afternoon

    This Afternoon: Sunny, with a high near 49. Light and variable wind.

    High: 49 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 36. Light south wind.

    Low: 36 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 57. South wind 5 to 9 mph.

    High: 57 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 47. Southeast wind around 7 mph.

    Low: 47 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 71. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 71 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A chance of rain, then rain likely and possibly a thunderstorm after 2am.  Mostly cloudy, with a low around 53. Chance of precipitation is 70%.

    Low: 53 °F

    Chance Rain
    then Rain
    Likely

  • Friday

    Friday: Rain likely, mainly before 2pm.  Mostly cloudy, with a high near 61. Chance of precipitation is 60%.

    High: 61 °F

    Rain Likely

  • Friday Night

    Friday Night: A chance of rain before 8pm.  Mostly cloudy, with a low around 29. Chance of precipitation is 30%.

    Low: 29 °F

    Chance Rain
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 49. Light and variable wind.
Tonight
Increasing clouds, with a low around 36. Light south wind.
Wednesday
Partly sunny, with a high near 57. South wind 5 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 47. Southeast wind around 7 mph.
Thursday
Partly sunny, with a high near 71. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.
Thursday Night
A chance of rain, then rain likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 70%.
Friday
Rain likely, mainly before 2pm. Mostly cloudy, with a high near 61. Chance of precipitation is 60%.
Friday Night
A chance of rain before 8pm. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 48.
Saturday Night
Mostly clear, with a low around 31.
Sunday
Sunny, with a high near 56.
Sunday Night
Mostly cloudy, with a low around 40.
Monday
Mostly sunny, with a high near 64.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Olney MD
 39.16°N 77.06°W (Elev. 486 ft)
10:54 am EDT Mar 24, 2026
12pm EDT Mar 24, 2026-6pm EDT Mar 30, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database