Penn Valley Weather Forecast

    • 23
    • 43

    Partly Sunny

    • 42
    • 48

    Mostly Cloudy

    • 26
    • 54

    Rain Likely

    • 32
    • 39

    Mostly Cloudy

    • 27
    • 46

    Partly Sunny

    • 27
    • 38

    Mostly Cloudy

Today 17 Dec Eastern Montgomery

Partly sunny. Not as cool with Highs in the lower 40s. Southwest Winds 5 to 10 Mph with Gusts up to 25 Mph.

Tonight 17 Dec Eastern Montgomery

Partly cloudy. Cold with Lows in the lower 20s. West Winds 5 to 10 Mph in the Evening, becoming light and variable.

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Penn Valley Temperature Statistics

December Temperature

Philadelphia - Wings Field Airport (8.1 miles)

  • Lowest 9 December, 2025

    8.8 °F

  • Average December

    30.3 °F

  • Highest 10 December, 2025

    43.3 °F

Climate (2020–Present)

Philadelphia - Wings Field Airport (8.1 miles)

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  • Average Low 2020–2025

    44.6 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    64.5 °F
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