Potomac Weather Forecast

    • 59
    • 75

    Increasing Clouds

    • 58
    • 77

    Partly Sunny

    • 59
    • 77

    Slight Chance Rain

    • 57
    • 73

    Mostly Cloudy

    • 52
    • 73

    Chance Rain Showers

    • 51
    • 62

    Chance Rain Showers

Today 20 Oct Central and Southeast Montgomery

Mostly sunny. Highs in the mid 70s. South Winds around 5 Mph.

Tonight 20 Oct Central and Southeast Montgomery

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 50s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac Temperature Statistics

October Temperature

Gaithersburg - Montgomery County Airport (10.6 miles)

  • Lowest 17 October, 2020

    36 °F

  • Average October

    57.1 °F

  • Highest 7 October, 2020

    80.1 °F

Climate (2010–Present)

Gaithersburg - Montgomery County Airport (10.6 miles)

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  • Average Low 2010–Present

    47.6 °F

  • Average 2010–Present

    56.6 °F

  • Average High 2010–Present

    66.4 °F
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