Potomac Weather Forecast

    • 67
    • 80

    Thunderstorms

    • 66
    • 84

    Partly Sunny

    • 62
    • 81

    Mostly Sunny

    • 63
    • 82

    Partly Sunny

    • 64
    • 80

    Mostly Cloudy

    • 62
    • 80

    Rain Showers

Today 17 Sep Central and Southeast Montgomery

Mostly cloudy. Isolated Showers in the Morning, then scattered Showers and Thunderstorms in the afternoon. Highs around 80. Northeast Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac Temperature Statistics

September Temperature

Gaithersburg - Montgomery County Airport (10.6 miles)

  • Lowest 3 September, 2021

    52 °F

  • Average September

    70 °F

  • Highest 8 September, 2021

    88 °F

Climate (2010–Present)

Gaithersburg - Montgomery County Airport (10.6 miles)

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  • Average Low 2010–Present

    47.3 °F

  • Average 2010–Present

    56.4 °F

  • Average High 2010–Present

    66.1 °F
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