Potomac Weather Forecast

    • 42
    • 57

    Rain Showers

    • 50
    • 57

    Rain

    • 45
    • 63

    Rain

    • 43
    • 57

    Mostly Sunny

    • 40
    • 59

    Partly Sunny

    • 38
    • 57

    Slight Chance Rain Showers

    • 45
    • 59

    Chance Rain Showers

Today 28 Oct Central and Southeast Montgomery

Cloudy. Highs in the upper 50s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 28 Oct Central and Southeast Montgomery

Mostly cloudy with isolated Showers in the Evening, then partly cloudy after midnight. Lows in the lower 40s. Northeast Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Potomac Temperature Statistics

October Temperature

Gaithersburg - Montgomery County Airport (10.6 miles)

  • Lowest 25 October, 2025

    32 °F

  • Average October

    56.8 °F

  • Highest 6 October, 2025

    82 °F

Climate (2020–Present)

Gaithersburg - Montgomery County Airport (10.6 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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