Sinsinawa Weather Forecast

    • 72
    • 87

    Thunderstorms

    • 72
    • 89

    Partly Sunny

    • 71
    • 89

    Chance Thunderstorms

    • 69
    • 85

    Chance Thunderstorms

    • 67
    • 85

    Slight Chance Rain Showers

    • 65
    • 84

    Partly Sunny

Today 31 Aug Grant

Partly sunny. Isolated Showers and Thunderstorms in the morning. Warmer with Highs in the upper 80s. Southwest Winds 10 to 15 Mph. Chance of rain 20 percent. Heat index Values in the mid 90s in the afternoon.

Tonight 31 Aug Grant

Partly cloudy. Scattered Showers and Thunderstorms after midnight. Humid with Lows in the lower 70s. Southwest Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 40 percent.

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Sinsinawa Temperature Statistics

August Temperature

Dubuque Regional Airport (11.8 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 (11.8 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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