Olney Weather Forecast

    • 65
    • 88

    Becoming Sunny

    • 64
    • 83

    Mostly Sunny

    • 66
    • 87

    Mostly Sunny

    • 71
    • 88

    Mostly Sunny

    • 72
    • 89

    Chance Thunderstorms

    • 71
    • 88

    Chance Thunderstorms

    • 70
    • 88

    Chance Rain Showers

Today 3 Jul Central and Southeast Montgomery

Mostly sunny. Highs in the upper 80s. West Winds around 5 Mph.

Tonight 3 Jul Central and Southeast Montgomery

Mostly clear. Lows in the mid 60s. Northwest Winds 5 to 10 Mph.

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Olney Temperature Statistics

July Temperature

Gaithersburg - Montgomery County Airport (5 miles)

  • Lowest 1 July, 2025

    71.6 °F

  • Average July

    79.5 °F

  • Highest 1 July, 2025

    91.9 °F

Climate (2020–Present)

Gaithersburg - Montgomery County Airport (5 miles)

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  • Average Low 2020–2025

    46.4 °F

  • Average 2020–2025

    56.1 °F

  • Average High 2020–2025

    65.9 °F
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