Petersburg Weather Forecast

    • 72
    • 90

    Partly Sunny

    • 72
    • 88

    Chance Thunderstorms

    • 66
    • 86

    Slight Chance Thunderstorms

    • 62
    • 80

    Partly Sunny

    • 62
    • 81

    Mostly Sunny

    • 63
    • 83

    Mostly Sunny

Today 17 Aug Muscatine

Sunny, hot. Near steady temperature around 90. South Winds around 5 Mph. Heat index Values up to 109.

Tonight 17 Aug Muscatine

Partly cloudy. Isolated Showers and Thunderstorms after midnight. Humid with Lows in the lower 70s. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent. Heat index Values up to 103 early in the evening.

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Petersburg Temperature Statistics

August Temperature

Davenport Municipal Airport (10.6 miles)

  • Lowest 1 August, 2025

    53.7 °F

  • Average August

    74.1 °F

  • Highest 8 August, 2025

    89.7 °F

Climate (2020–Present)

Davenport Municipal Airport (10.6 miles)

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  • Average Low 2020–2025

    42 °F

  • Average 2020–2025

    52 °F

  • Average High 2020–2025

    62 °F
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