Olney Weather Forecast

    • 14
    • 29

    Becoming Sunny

    • 17
    • 28

    Partly Sunny

    • 24
    • 35

    Partly Sunny

    • 28
    • 45

    Mostly Cloudy

    • 37
    • 49

    Rain Likely

    • 25
    • 45

    Partly Sunny

Today 14 Dec Central and Southeast Montgomery

Mostly sunny. Highs around 30. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 14 Dec Central and Southeast Montgomery

Mostly clear and Brisk, cold with Lows around 15. Northwest Winds 15 to 25 Mph, Diminishing to 10 to 15 Mph after midnight. Wind chill Values as low as zero.

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Olney Temperature Statistics

December Temperature

Gaithersburg - Montgomery County Airport (5 miles)

  • Lowest 4 December, 2025

    21.9 °F

  • Average December

    32.3 °F

  • Highest 1 December, 2025

    44.1 °F

Climate (2020–Present)

Gaithersburg - Montgomery County Airport (5 miles)

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  • Average Low 2020–2025

    46.3 °F

  • Average 2020–2025

    56 °F

  • Average High 2020–2025

    65.8 °F
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