Millersburg Weather Forecast

    • 31
    • 38

    Increasing Clouds

    • 20
    • 40

    Partly Sunny

    • 27
    • 37

    Mostly Cloudy

    • 32
    • 44

    Mostly Cloudy

    • 30
    • 44

    Mostly Cloudy

    • 40
    • 47

    Chance Rain Showers

Today 20 Dec Dauphin

Mostly sunny. Much cooler with Highs in the upper 30s. West Winds 5 to 10 Mph, becoming south in the afternoon. Gusts up to 25 Mph.

Tonight 20 Dec Dauphin

Partly cloudy and much cooler. Near steady temperature in the mid 20s. Northwest Winds 15 to 20 Mph with Gusts up to 35 Mph.

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  • Temperature Forecast NOAA

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Millersburg Temperature Statistics

December Temperature

Selinsgrove Penn Valley Airport (19.9 miles)

  • Lowest 9 December, 2025

    5 °F

  • Average December

    26.7 °F

  • Highest 17 December, 2025

    51.1 °F

Climate (2020–Present)

Selinsgrove Penn Valley Airport (19.9 miles)

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  • Average Low 2020–2025

    42.4 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    63.1 °F
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