Treasure Valley Park Weather Forecast

    • 49
    • 65

    Mostly Cloudy

    • 52
    • 65

    Rain Showers

    • 45
    • 62

    Rain Showers

    • 38
    • 55

    Rain Likely

    • 32
    • 53

    Chance Rain

    • 33
    • 52

    Partly Sunny

Today 23 Dec Lower Washington County

Mostly cloudy. Highs in the mid 60s.

Tonight 23 Dec Lower Washington County

A 30 percent chance of rain after midnight. Mostly cloudy. Lows around 50.

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Treasure Valley Park Temperature Statistics

December Temperature

St George Municipal Airport (1.9 miles)

  • Lowest 5 December, 2025

    28.9 °F

  • Average December

    44.9 °F

  • Highest 11 December, 2025

    64 °F

Climate (2020–Present)

St George Municipal Airport (1.9 miles)

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  • Average Low 2020–2025

    52.5 °F

  • Average 2020–2025

    64.4 °F

  • Average High 2020–2025

    76.4 °F
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