Mark Twain National Wildlife Refuge Weather Forecast

    • 62
    • 82

    Thunderstorms Likely

    • 62
    • 85

    Rain Showers Likely

    • 67
    • 87

    Rain Showers Likely

    • 65
    • 87

    Thunderstorms Likely

    • 52
    • 82

    Rain Showers Likely

    • 49
    • 70

    Partly Sunny

Today 15 May Mercer

Mostly sunny. Highs in the lower 80s. South Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 15 May Mercer

Partly cloudy in the Evening, then mostly cloudy with Showers and Thunderstorms likely after midnight. Lows in the lower 60s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

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Mark Twain National Wildlife Refuge Temperature Statistics

May Temperature

Muscatine (19.3 miles)

  • Lowest 7 May, 2026

    32 °F

  • Average May

    57.4 °F

  • Highest 4 May, 2026

    84.2 °F

Climate (2021–Present)

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

    63.4 °F
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