Meramec State Park Weather Forecast

    • 55
    • 79

    Sunny

    • 55
    • 82

    Increasing Clouds

    • 56
    • 79

    Mostly Cloudy

    • 54
    • 73

    Chance Rain Showers

    • 54
    • 71

    Chance Rain Showers

    • 56
    • 70

    Rain Showers Likely

    • 53
    • 71

    Chance Rain Showers

Today 28 Oct Franklin

Mostly cloudy in the Morning, then becoming partly sunny. A 50 percent chance of Showers. Highs in the upper 60s.

Tonight 28 Oct Franklin

Clear. Lows in the mid 50s. South Winds around 5 Mph.

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  • Temperature Real-Time

Meramec State Park Temperature Statistics

October Temperature

Washington Regional Airport (26.1 miles)

  • Lowest 18 October, 2026

    35.6 °F

  • Average October

    63.2 °F

  • Highest 13 October, 2026

    95 °F

Climate (2021–2026)

Washington Regional Airport (26.1 miles)

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  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    58.6 °F

  • Average High 2021–2026

    69.8 °F
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