Mark Twain National Wildlife Refuge Weather Forecast

    • 64
    • 84

    Chance Rain Showers

    • 58
    • 82

    Mostly Sunny

    • 59
    • 78

    Partly Sunny

    • 61
    • 77

    Partly Sunny

    • 65
    • 81

    Partly Sunny

    • 63
    • 82

    Partly Sunny

Today 21 Aug Mercer

Sunny. A chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the lower 80s. Southwest Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 21 Aug Mercer

Mostly clear. Near steady temperature in the lower 60s. Southeast Winds around 5 Mph.

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Mark Twain National Wildlife Refuge Temperature Statistics

August Temperature

Muscatine (19.3 miles)

  • Lowest 3 August, 2026

    60.8 °F

  • Average August

    74.9 °F

  • Highest 10 August, 2026

    89.6 °F

Climate (2021–2026)

Muscatine (19.3 miles)

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  • Average Low 2021–2026

    42.4 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    63.5 °F
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