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.

Overcast

63°F

17°C

Humidity 73%
Wind Speed NW 18 G 26 mph
Barometer 29.81 in (1010.6 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 23 Mar 10:56 am EDT
Extended Forecast for

Olney MD

  • Today

    Today: Scattered showers before noon. Mostly sunny, with a high near 56. Northwest wind 14 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 30%.

    High: 56 °F

    Scattered
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 31. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.

    Low: 31 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 49. North wind around 6 mph becoming calm in the afternoon.

    High: 49 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 36. Light south wind.

    Low: 36 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 58. South wind 5 to 11 mph, with gusts as high as 20 mph.

    High: 58 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Rain likely after 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.

    Low: 52 °F

    Mostly Cloudy
    then Rain
    Likely

  • Friday

    Friday: Rain likely, mainly before 8am. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.

    High: 60 °F

    Rain Likely

Detailed Forecast

Today
Scattered showers before noon. Mostly sunny, with a high near 56. Northwest wind 14 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 30%.
Tonight
Mostly clear, with a low around 31. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Tuesday
Sunny, with a high near 49. North wind around 6 mph becoming calm in the afternoon.
Tuesday Night
Partly cloudy, with a low around 36. Light south wind.
Wednesday
Partly sunny, with a high near 58. South wind 5 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 47.
Thursday
Partly sunny, with a high near 71.
Thursday Night
Rain likely after 2am. Mostly cloudy, with a low around 52. 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
A chance of rain before 2am. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 47.
Saturday Night
Mostly clear, with a low around 30.
Sunday
Sunny, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Olney MD
 39.16°N 77.06°W (Elev. 486 ft)
Last Update:
11:19 am EDT Mar 23, 2026
Forecast Valid:
11am EDT Mar 23, 2026-6pm EDT Mar 29, 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