Sinsinawa Weather Forecast

    • 48
    • 62

    Becoming Sunny

    • 51
    • 66

    Increasing Clouds

    • 54
    • 66

    Mostly Cloudy

    • 51
    • 66

    Mostly Cloudy

    • 54
    • 63

    Chance Rain Showers

    • 55
    • 67

    Mostly Cloudy

    • 57
    • 71

    Chance Rain Showers

Today 22 Sep Grant

Mostly cloudy with a 40 percent chance of Showers. Lows in the mid 50s. Highs around 70.

Tonight 22 Sep Grant

Partly cloudy. Lows in the mid 40s. Northeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sinsinawa Temperature Statistics

September Temperature

Dubuque Regional Airport (11.8 miles)

  • Lowest 14 September, 2026

    48.7 °F

  • Average September

    70.4 °F

  • Highest 1 September, 2026

    91.7 °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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