Seneca Weather Forecast

    • 60
    • 83

    Increasing Clouds

    • 61
    • 85

    Partly Sunny

    • 61
    • 83

    Mostly Cloudy

    • 59
    • 80

    Chance Rain Showers

    • 59
    • 77

    Chance Rain Showers

    • 61
    • 81

    Slight Chance Thunderstorms

Today 13 Sep Northwest Montgomery

Sunny. Highs in the lower 80s. Southwest Winds around 5 Mph.

Tonight 13 Sep Northwest Montgomery

Mostly clear in the Evening, then becoming partly cloudy. Lows around 60. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Seneca Temperature Statistics

September Temperature

Gaithersburg - Montgomery County Airport (11.2 miles)

  • Lowest 9 September, 2025

    48.2 °F

  • Average September

    66.9 °F

  • Highest 6 September, 2025

    89.1 °F

Climate (2020–Present)

Gaithersburg - Montgomery County Airport (11.2 miles)

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  • Average Low 2020–2025

    46.3 °F

  • Average 2020–2025

    56 °F

  • Average High 2020–2025

    65.9 °F
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