Sunday Peak Weather Forecast

    • 43
    • 48

    Partly Sunny

    • 45
    • 51

    Mostly Cloudy

    • 38
    • 46

    Rain Showers

    • 36
    • 42

    Rain Showers

    • 34
    • 39

    Snow

    • 33
    • 37

    Snow

Today 21 Dec South End of the Upper Sierra

Mostly sunny. Highs 48 to 60. West Winds 5 to 15 Mph with Gusts to around 40 Mph.

Tonight 21 Dec South End of the Upper Sierra

Partly cloudy. Lows 32 to 46. West Winds up to 10 Mph with Gusts to around 30 Mph.

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Sunday Peak Temperature Statistics

December Temperature

Porterville, Porterville Municipal Airport (31.7 miles)

  • Lowest 2 December, 2025

    35.1 °F

  • Average December

    44.5 °F

  • Highest 18 December, 2025

    61 °F

Climate (2020–Present)

Porterville, Porterville Municipal Airport (31.7 miles)

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  • Average Low 2020–2025

    51.6 °F

  • Average 2020–2025

    64.9 °F

  • Average High 2020–2025

    79 °F
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