Mifflinburg Weather Forecast

    • 51
    • 77

    Decreasing Clouds

    • 60
    • 72

    Rain Showers

    • 57
    • 70

    Rain Showers

    • 54
    • 66

    Rain Showers Likely

    • 49
    • 59

    Chance Rain Showers

    • 49
    • 59

    Chance Rain Showers

Today 18 Sep Union

Mostly sunny. Highs in the upper 70s. North Winds around 5 Mph.

Tonight 18 Sep Union

Partly cloudy. Patchy fog after midnight. Cooler with Lows in the lower 50s. North Winds around 5 Mph.

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Mifflinburg Temperature Statistics

September Temperature

Selinsgrove Penn Valley Airport (11.2 miles)

  • Lowest 15 September, 2026

    46 °F

  • Average September

    69.2 °F

  • Highest 1 September, 2026

    90 °F

Climate (2021–2026)

Selinsgrove Penn Valley Airport (11.2 miles)

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  • Average Low 2021–2026

    42.3 °F

  • Average 2021–2026

    52.7 °F

  • Average High 2021–2026

    63.1 °F
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