Sweet Arrow Lake Weather Forecast

    • 63
    • 84

    Gradual Clearing

    • 54
    • 79

    Rain Showers

    • 46
    • 74

    Mostly Sunny

    • 45
    • 72

    Mostly Sunny

    • 48
    • 73

    Mostly Sunny

    • 50
    • 75

    Mostly Sunny

Today 5 Sep Schuylkill

Partly sunny this Morning, then clearing. Areas of fog this morning. Highs in the lower 80s. South Winds 5 to 10 Mph.

Tonight 5 Sep Schuylkill

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 60s. South Winds 5 to 10 Mph.

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Sweet Arrow Lake Temperature Statistics

September Temperature

Muir Army Air Field / Indiantown (13.7 miles)

  • Lowest 2 September, 2025

    58.8 °F

  • Average September

    58.8 °F

  • Highest 2 September, 2025

    58.8 °F

Climate (2020–Present)

Muir Army Air Field / Indiantown (13.7 miles)

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  • Average Low 2020–2025

    45.5 °F

  • Average 2020–2025

    54.9 °F

  • Average High 2020–2025

    64.3 °F
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