Mark Twain National Wildlife Refuge Weather Forecast

    • 62
    • 84

    Mostly Sunny

    • 70
    • 84

    Mostly Cloudy

    • 75
    • 90

    Slight Chance Thunderstorms

    • 75
    • 90

    Slight Chance Thunderstorms

    • 73
    • 89

    Chance Rain Showers

    • 73
    • 90

    Slight Chance Thunderstorms

Today 28 Aug Mercer

Patchy fog in the morning. Sunny. Highs in the mid 80s. West Winds around 5 Mph.

Tonight 28 Aug Mercer

Mostly clear. Patchy fog. Near steady temperature in the lower 60s. Light and variable Winds.

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Mark Twain National Wildlife Refuge Temperature Statistics

August Temperature

Muscatine (19.3 miles)

  • Lowest 24 August, 2026

    53.6 °F

  • Average August

    73.9 °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

    63.4 °F
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