Harrisville Weather Forecast

    • 48
    • 78

    Slight Chance Rain Showers

    • 36
    • 65

    Mostly Sunny

    • 40
    • 65

    Mostly Sunny

    • 55
    • 74

    Partly Sunny

    • 58
    • 75

    Chance Rain Showers

    • 55
    • 75

    Chance Rain Showers

    • 52
    • 74

    Chance Rain Showers

Today 18 Sep Lewis

Sunny, warm with Highs Ranging from the lower 70s on the Hilltops to the upper 70s across the lower Elevations. Light west Winds.

Tonight 18 Sep Lewis

Partly cloudy Early, then becoming mostly cloudy with some patchy fog. Lows in the upper 40s. Light Winds.

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Harrisville Temperature Statistics

September Temperature

Fort Drum / Wheeler-Sack U. S. Army Airfield (21.1 miles)

  • Lowest 8 September, 2025

    45 °F

  • Average September

    61.9 °F

  • Highest 4 September, 2025

    81.9 °F

Climate (2020–Present)

Fort Drum / Wheeler-Sack U. S. Army Airfield (21.1 miles)

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  • Average Low 2020–2025

    39.7 °F

  • Average 2020–2025

    48.1 °F

  • Average High 2020–2025

    56.2 °F
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