Mark Twain National Wildlife Refuge Weather Forecast

    • 67
    • 78

    Rain Showers Likely

    • 65
    • 84

    Rain Showers

    • 57
    • 73

    Rain Showers

    • 53
    • 65

    Rain Showers Likely

    • 49
    • 64

    Mostly Cloudy

    • 51
    • 67

    Mostly Cloudy

Today 18 Sep Mercer

Cloudy this Morning, then becoming partly sunny. Patchy fog this morning. A slight chance of Thunderstorms. A chance of Showers, mainly this morning. Highs in the upper 70s. East Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 18 Sep Mercer

Partly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then mostly cloudy with Showers likely with a chance of Thunderstorms after midnight. Humid with Lows in the upper 60s. Southeast Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 70 percent.

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Mark Twain National Wildlife Refuge Temperature Statistics

September Temperature

Muscatine (19.3 miles)

  • Lowest 13 September, 2026

    53.6 °F

  • Average September

    75.3 °F

  • Highest 1 September, 2026

    96.8 °F

Climate (2021–2026)

Muscatine (19.3 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    63.5 °F
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