Prescott Weather Forecast

    • 53
    • 73

    Chance Rain Showers

    • 52
    • 78

    Mostly Sunny

    • 52
    • 80

    Mostly Sunny

    • 54
    • 84

    Mostly Sunny

    • 53
    • 85

    Mostly Sunny

    • 51
    • 80

    Partly Sunny

Today 17 Sep Foothills of the Blue Mountains of Washington

Partly cloudy in the Morning, then mostly cloudy with a 20 percent chance of rain Showers in the afternoon. Highs in the lower to mid 70s. Light wind.

Tonight 17 Sep Foothills of the Blue Mountains of Washington

Mostly cloudy. A chance of Showers and Thunderstorms in the Evening, then a chance of rain Showers overnight. Lows in the lower 50s. South wind 5 to 10 Mph. Chance of precipitation 50 percent. Rainfall Amounts less than a tenth of an Inch, except higher Amounts possible in Thunderstorms.

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Prescott Temperature Statistics

September Temperature

Walla Walla Regional Airport (13.7 miles)

  • Lowest 4 September, 2026

    49.6 °F

  • Average September

    64 °F

  • Highest 9 September, 2026

    86.6 °F

Climate (2021–2026)

Walla Walla Regional Airport (13.7 miles)

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  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    54.8 °F

  • Average High 2021–2026

    64.5 °F
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