Crooked Slough Weather Forecast

    • 69
    • 85

    Rain Showers

    • 59
    • 81

    Partly Sunny

    • 56
    • 77

    Mostly Sunny

    • 64
    • 80

    Chance Rain Showers

    • 58
    • 78

    Chance Thunderstorms

    • 59
    • 75

    Chance Rain Showers

Today 8 Sep Grant

Mostly cloudy this Morning, then becoming partly sunny. A slight chance of Thunderstorms. A chance of Showers this Morning, then a slight chance of Showers this afternoon. Highs in the mid 80s. South Winds 10 to 15 Mph. Chance of rain 50 percent.

Tonight 8 Sep Grant

A chance of Thunderstorms. Showers with Lows in the upper 60s. Southwest Winds 5 to 10 Mph. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crooked Slough Temperature Statistics

September Temperature

Dubuque Regional Airport (23.6 miles)

  • Lowest 1 September, 2026

    69.7 °F

  • Average September

    80.5 °F

  • Highest 1 September, 2026

    91.7 °F

Climate (2021–2026)

Dubuque Regional Airport (23.6 miles)

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  • Average Low 2021–2026

    40.7 °F

  • Average 2021–2026

    50.1 °F

  • Average High 2021–2026

    59.5 °F
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