Mechanicsville Weather Forecast

    • 57
    • 80

    Partly Sunny

    • 59
    • 72

    Slight Chance Rain Showers

    • 58
    • 82

    Mostly Sunny

    • 48
    • 80

    Mostly Sunny

    • 53
    • 76

    Partly Sunny

    • 56
    • 75

    Mostly Cloudy

Today 16 Sep Montour

Partly sunny. Highs in the lower 80s. East Winds around 5 Mph.

Tonight 16 Sep Montour

Mostly cloudy. Lows in the upper 50s. East Winds around 5 Mph.

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Mechanicsville Temperature Statistics

September Temperature

Selinsgrove Penn Valley Airport (17.4 miles)

  • Lowest 8 September, 2025

    39.9 °F

  • Average September

    63.1 °F

  • Highest 13 September, 2025

    84 °F

Climate (2020–Present)

Selinsgrove Penn Valley Airport (17.4 miles)

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  • Average Low 2020–2025

    42.4 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    63.2 °F
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