Sinsinawa Weather Forecast

    • 65
    • 80

    Slight Chance Thunderstorms

    • 63
    • 82

    Mostly Sunny

    • 60
    • 80

    Mostly Sunny

    • 62
    • 81

    Partly Sunny

    • 66
    • 79

    Chance Thunderstorms

    • 69
    • 84

    Chance Thunderstorms

Today 25 Aug Grant

Patchy fog this morning. Mostly sunny. Highs around 80. South Winds 5 to 10 Mph.

Tonight 25 Aug Grant

Mostly cloudy in the Evening, then partly cloudy with a chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the mid 60s. South Winds 5 to 10 Mph. Chance of rain 30 percent.

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Sinsinawa Temperature Statistics

August Temperature

Dubuque Regional Airport (11.8 miles)

  • Lowest 23 August, 2026

    55.9 °F

  • Average August

    70.8 °F

  • Highest 10 August, 2026

    84 °F

Climate (2021–2026)

Dubuque Regional Airport (11.8 miles)

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  • Average Low 2021–2026

    40.7 °F

  • Average 2021–2026

    50.1 °F

  • Average High 2021–2026

    59.4 °F
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