Crooked Slough Weather Forecast

    • 61
    • 75

    Chance Rain Showers

    • 64
    • 73

    Rain Showers

    • 59
    • 80

    Rain Showers Likely

    • 55
    • 67

    Rain Showers Likely

    • 52
    • 63

    Chance Rain Showers

    • 52
    • 66

    Mostly Cloudy

Today 17 Sep Grant

Cloudy. Patchy fog late this morning. A chance of Showers late this Morning, then a chance of Sprinkles this afternoon. Highs in the mid 70s. Northeast Winds around 5 Mph. Chance of rain 40 percent.

Tonight 17 Sep Grant

Mostly cloudy. Lows in the upper 50s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crooked Slough Temperature Statistics

September Temperature

Dubuque Regional Airport (23.6 miles)

  • Lowest 14 September, 2026

    48.9 °F

  • Average September

    72.4 °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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