Mark Twain National Wildlife Refuge Weather Forecast

    • 64
    • 83

    Partly Sunny

    • 60
    • 86

    Chance Rain Showers

    • 61
    • 80

    Chance Thunderstorms

    • 67
    • 87

    Chance Thunderstorms

    • 60
    • 80

    Rain Showers Likely

    • 63
    • 79

    Chance Rain Showers

Today 11 Sep Mercer

Areas of fog this morning. Sunny. Highs in the lower 80s. Southeast Winds 5 to 10 Mph.

Tonight 11 Sep Mercer

Mostly clear in the Evening, then becoming partly cloudy. Humid with Lows in the mid 60s. South Winds around 5 Mph.

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Mark Twain National Wildlife Refuge Temperature Statistics

September Temperature

Muscatine (19.3 miles)

  • Lowest 7 September, 2026

    66.2 °F

  • Average September

    80.9 °F

  • Highest 1 September, 2026

    96.8 °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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