Grand Detour Weather Forecast

    • 71
    • 89

    Chance Thunderstorms

    • 72
    • 89

    Slight Chance Thunderstorms

    • 70
    • 91

    Chance Thunderstorms

    • 70
    • 90

    Chance Thunderstorms

    • 65
    • 86

    Chance Thunderstorms

    • 60
    • 79

    Mostly Sunny

    • 60
    • 82

    Mostly Sunny

Today 15 Aug Ogle

Partly cloudy. Highs in the upper 80s. South Winds 5 to 10 Mph.

Tonight 15 Aug Ogle

Partly cloudy early in the Evening, then becoming mostly cloudy. A chance of Showers and Thunderstorms. Lows in the lower 70s. South Winds around 5 Mph. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Detour Temperature Statistics

August Temperature

Sterling Rockfalls (16.8 miles)

  • Lowest 3 August, 2025

    54 °F

  • Average August

    73.7 °F

  • Highest 9 August, 2025

    91 °F

Climate (2020–Present)

Sterling Rockfalls (16.8 miles)

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  • Average Low 2020–2025

    41.7 °F

  • Average 2020–2025

    51.7 °F

  • Average High 2020–2025

    61.7 °F
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