Severe Weather and Heavy Rain from the Ohio Valley to the Mid-Atlantic; Heat Persists in the South-Central U.S.

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected across portions of the Ohio Valley into southern Mid-Atlantic and Carolinas. Rounds of strong thunderstorms are expected to develop across the northern and central Plains. Sweltering heat remains most persistent across the South-Central Plains and Lower/Middle Mississippi Valley through next week. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

61°F

16°C

Humidity NA
Wind Speed Calm
Barometer 29.98 in (1016.1 mb)
Dewpoint N/A
Visibility 10.00 mi
Last update 6 Sep 6:56 am EDT
Extended Forecast for

Olney MD

  • Today

    Today: Sunny, with a high near 82. North wind around 7 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Patchy fog before 2am, then patchy fog after 3am.  Otherwise, partly cloudy, with a low around 61. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 61 °F

    Partly Cloudy
    then Patchy
    Fog

  • Labor Day

    Labor Day: Mostly sunny, with a high near 81. Light northeast wind.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 87. Chance of precipitation is 40%.

    High: 87 °F

    Sunny then
    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 82. North wind around 7 mph.
Tonight
Patchy fog before 2am, then patchy fog after 3am. Otherwise, partly cloudy, with a low around 61. Northeast wind around 5 mph becoming calm in the evening.
Labor Day
Mostly sunny, with a high near 81. Light northeast wind.
Monday Night
Partly cloudy, with a low around 60. Calm wind.
Tuesday
Sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 64.
Wednesday
Mostly sunny, with a high near 87.
Wednesday Night
Partly cloudy, with a low around 71.
Thursday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 79.
Friday Night
Mostly clear, with a low around 60.
Saturday
Sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Olney MD
 39.14°N 77.1°W (Elev. 449 ft)
4:52 am EDT Sep 6, 2026
7am EDT Sep 6, 2026-6pm EDT Sep 12, 2026
 
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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