Long Slough Weather Forecast

    • 73
    • 85

    Rain Showers Likely

    • 72
    • 87

    Chance Thunderstorms

    • 72
    • 90

    Partly Sunny

    • 70
    • 89

    Chance Thunderstorms

    • 69
    • 86

    Chance Rain Showers

    • 68
    • 87

    Slight Chance Rain Showers

Today 30 Aug Grant

Showers with a chance of Thunderstorms. Near steady temperature in the lower 80s. South Winds 10 to 15 Mph. Chance of rain 90 percent.

Tonight 30 Aug Grant

Partly cloudy in the Evening, then mostly cloudy with a slight chance of Showers and Thunderstorms after midnight. Humid with Lows in the lower 70s. South Winds 5 to 10 Mph. Chance of rain 20 percent.

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Long Slough Temperature Statistics

August Temperature

Dubuque Regional Airport (23 miles)

  • Lowest 24 August, 2026

    51.7 °F

  • Average August

    70.5 °F

  • Highest 10 August, 2026

    84 °F

Climate (2021–2026)

Dubuque Regional Airport (23 miles)

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  • Average Low 2021–2026

    40.6 °F

  • Average 2021–2026

    50.1 °F

  • Average High 2021–2026

    59.4 °F
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