Mann Creek State Park Weather Forecast

    • 66
    • 96

    Slight Chance Thunderstorms

    • 63
    • 90

    Patchy Smoke

    • 67
    • 93

    Partly Sunny

    • 68
    • 93

    Partly Sunny

    • 63
    • 92

    Mostly Sunny

    • 61
    • 87

    Partly Sunny

Today 22 Aug Lower Treasure Valley

Partly cloudy. A slight chance of Showers and Thunderstorms this afternoon. Thunderstorms may produce gusty Winds this afternoon. Chance of rain 20 percent. Highs 95 to 100. South Winds 10 to 15 Mph. Gusts to 30 Mph this morning.

Tonight 22 Aug Lower Treasure Valley

Partly cloudy. A chance of Showers and Thunderstorms in the evening. Patchy blowing dust in the Evening, then patchy smoke after midnight. Thunderstorms may produce gusty Winds in the evening. Chance of rain 30 percent. Lows 61 to 66. Breezy. South Winds 10 to 20 Mph in the Evening, becoming west up to 10 Mph after midnight. Gusts to 30 Mph.

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Mann Creek State Park Temperature Statistics

August Temperature

Ontario Municipal Airport (26.7 miles)

  • Lowest 5 August, 2026

    50.6 °F

  • Average August

    77.9 °F

  • Highest 1 August, 2026

    99.6 °F

Climate (2021–2026)

Ontario Municipal Airport (26.7 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    67.1 °F
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