Mark Twain National Wildlife Refuge Weather Forecast

    • 73
    • 90

    Rain Showers Likely

    • 63
    • 85

    Mostly Sunny

    • 58
    • 79

    Mostly Sunny

    • 61
    • 80

    Partly Sunny

    • 62
    • 81

    Slight Chance Rain Showers

    • 67
    • 86

    Mostly Sunny

Today 20 Jul Mercer

Sunny. Patchy smoke. A slight chance of Showers and Thunderstorms this afternoon. Highs in the upper 80s. South Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 101 this afternoon.

Tonight 20 Jul Mercer

Partly cloudy. A slight chance of Showers and Thunderstorms in the Evening, then Showers likely with a chance of Thunderstorms after midnight. Humid with Lows in the lower 70s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 70 percent. Heat index Values up to 100 early in the evening.

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Mark Twain National Wildlife Refuge Temperature Statistics

July Temperature

Muscatine (19.3 miles)

  • Lowest 7 July, 2026

    62.6 °F

  • Average July

    79.2 °F

  • Highest 1 July, 2026

    95 °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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