Meramec State Park Weather Forecast

    • 39
    • 65

    Increasing Clouds

    • 42
    • 58

    Mostly Cloudy

    • 55
    • 72

    Partly Sunny

    • 57
    • 73

    Chance Rain Showers

    • 57
    • 77

    Chance Thunderstorms

    • 61
    • 81

    Chance Rain Showers

Today 6 Apr Franklin

Areas of frost this morning. Sunny. Highs in the mid 60s. Northwest Winds 5 to 10 Mph.

Tonight 6 Apr Franklin

Mostly clear in the Evening, then becoming mostly cloudy. Lows in the upper 30s. Northeast Winds 5 to 10 Mph.

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Meramec State Park Temperature Statistics

April Temperature

Washington Regional Airport (26.1 miles)

  • Lowest 1 April, 2026

    51.8 °F

  • Average April

    68.2 °F

  • Highest 3 April, 2026

    84.2 °F

Climate (2021–Present)

Washington Regional Airport (26.1 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    69.5 °F
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