Petrified Forest National Park Weather Forecast

    • 38
    • 70

    Mostly Sunny

    • 36
    • 66

    Mostly Sunny

    • 35
    • 67

    Partly Sunny

    • 36
    • 69

    Partly Sunny

    • 42
    • 67

    Mostly Cloudy

    • 44
    • 61

    Mostly Cloudy

    • 40
    • 60

    Slight Chance Rain Showers

Today 19 Dec Little Colorado River Valley in Apache County

Breezy, Warmer, sunny. Highs around 68. West Winds 15 to 25 Mph.

Tonight 19 Dec Little Colorado River Valley in Apache County

Mostly clear. Lows 37 to 43. Southwest Winds 15 to 20 Mph with Gusts to around 35 Mph.

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Petrified Forest National Park Temperature Statistics

December Temperature

St. Johns, St. Johns Industrial Airpark (36 miles)

  • Lowest 5 December, 2025

    18 °F

  • Average December

    38.1 °F

  • Highest 13 December, 2025

    64.9 °F

Climate (2020–Present)

St. Johns, St. Johns Industrial Airpark (36 miles)

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  • Average Low 2020–2025

    38.3 °F

  • Average 2020–2025

    54.3 °F

  • Average High 2020–2025

    70.2 °F
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