Sinsinawa Weather Forecast

    • 64
    • 79

    Rain Showers Likely

    • 44
    • 67

    Slight Chance Rain Showers

    • 42
    • 63

    Partly Sunny

    • 46
    • 64

    Chance Rain Showers

    • 49
    • 64

    Rain Showers Likely

    • 53
    • 73

    Mostly Cloudy

    • 57
    • 79

    Slight Chance Thunderstorms

Today 18 May Grant

Mostly cloudy. Highs in the upper 70s. South Winds 10 to 15 Mph.

Tonight 18 May Grant

Mostly cloudy with a chance of Thunderstorms. A chance of Showers this Evening, then Showers after midnight. Lows in the lower 60s. South Winds 10 to 20 Mph with Gusts up to 30 Mph. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sinsinawa Temperature Statistics

May Temperature

Dubuque Regional Airport (11.8 miles)

  • Lowest 2 May, 2026

    32 °F

  • Average May

    55.6 °F

  • Highest 16 May, 2026

    82 °F

Climate (2021–Present)

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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