Petrified Forest National Park Weather Forecast

    • 59
    • 85

    Rain Showers Likely

    • 52
    • 79

    Rain Showers Likely

    • 52
    • 81

    Mostly Sunny

    • 52
    • 81

    Partly Sunny

    • 52
    • 83

    Mostly Sunny

    • 52
    • 85

    Mostly Sunny

Today 18 Sep Little Colorado River Valley in Apache County

Mostly sunny in the morning. Partly cloudy with a 10 percent chance of Thunderstorms in the afternoon. Highs 80 to 86. Light Winds.

Tonight 18 Sep Little Colorado River Valley in Apache County

Mostly cloudy with a slight chance of Thunderstorms in the evening. Partly cloudy with rain Showers likely and a slight chance of Thunderstorms after midnight. Lows around 55. Southwest Winds around 15 Mph early in the evening becoming light. Chance of precipitation 10 percent.

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Petrified Forest National Park Temperature Statistics

September Temperature

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

  • Lowest 14 September, 2025

    43 °F

  • Average September

    70.4 °F

  • Highest 2 September, 2025

    90 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    37.9 °F

  • Average 2020–2025

    54.2 °F

  • Average High 2020–2025

    70.2 °F
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