Meramec State Park Weather Forecast

    • 71
    • 89

    Mostly Sunny

    • 73
    • 92

    Rain Showers Likely

    • 71
    • 89

    Rain Showers Likely

    • 69
    • 87

    Chance Thunderstorms

    • 68
    • 87

    Slight Chance Thunderstorms

    • 69
    • 89

    Mostly Sunny

Today 8 Jul Franklin

Sunny. A slight chance of Showers and Thunderstorms. Highs in the upper 80s. West Winds around 5 Mph Early, becoming light and variable. Chance of rain 20 percent.

Tonight 8 Jul Franklin

Mostly clear. Lows around 70. Light and variable Winds, becoming south around 5 Mph after midnight.

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Meramec State Park Temperature Statistics

July Temperature

Washington Regional Airport (26.1 miles)

  • Lowest 6 July, 2026

    68 °F

  • Average July

    81.2 °F

  • Highest 2 July, 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

    58.5 °F

  • Average High 2021–2026

    69.7 °F
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