Meramec State Park Weather Forecast

    • 65
    • 81

    Chance Thunderstorms

    • 67
    • 84

    Rain Showers

    • 68
    • 82

    Rain Showers

    • 72
    • 87

    Chance Thunderstorms

    • 75
    • 92

    Mostly Sunny

    • 75
    • 94

    Mostly Sunny

Today 24 Jun Franklin

Mostly sunny Early, then mostly cloudy with a chance of Showers and Thunderstorms. Highs in the lower 80s. Southwest Winds around 5 Mph. Chance of rain 30 percent.

Tonight 24 Jun Franklin

Mostly cloudy in the Evening, then becoming partly cloudy. A chance of Showers and Thunderstorms. Patchy fog after midnight. Lows in the mid 60s. Southwest Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 30 percent.

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Meramec State Park Temperature Statistics

June Temperature

Washington Regional Airport (26.1 miles)

  • Lowest 3 June, 2026

    53.6 °F

  • Average June

    74.8 °F

  • Highest 17 June, 2026

    93.2 °F

Climate (2021–2026)

Washington Regional Airport (26.1 miles)

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  • Average Low 2021–2026

    47.7 °F

  • Average 2021–2026

    58.5 °F

  • Average High 2021–2026

    69.6 °F
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