Olney Weather Forecast

    • 62
    • 83

    Becoming Sunny

    • 65
    • 82

    Mostly Sunny

    • 67
    • 85

    Partly Sunny

    • 72
    • 90

    Mostly Sunny

    • 74
    • 95

    Slight Chance Thunderstorms

    • 72
    • 93

    Chance Thunderstorms

Today 21 Jul Central and Southeast Montgomery

Mostly sunny. Highs in the mid 80s. North Winds around 5 Mph.

Tonight 21 Jul Central and Southeast Montgomery

Mostly clear. Lows in the lower 60s. Northeast Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Olney Temperature Statistics

July Temperature

Gaithersburg - Montgomery County Airport (5 miles)

  • Lowest 4 July, 2025

    60.1 °F

  • Average July

    78.4 °F

  • Highest 8 July, 2025

    95 °F

Climate (2020–Present)

Gaithersburg - Montgomery County Airport (5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    46.5 °F

  • Average 2020–2025

    56.1 °F

  • Average High 2020–2025

    65.9 °F
Get WillyWeather+ to remove ads