Meramec State Park Weather Forecast

    • 38
    • 63

    Mostly Sunny

    • 56
    • 68

    Increasing Clouds

    • 20
    • 68

    Rain

    • 12
    • 29

    Slight Chance Snow

    • 31
    • 40

    Slight Chance Rain/Snow

    • 43
    • 67

    Mostly Sunny

    • 47
    • 74

    Mostly Sunny

Today 13 Mar Franklin

Mostly sunny. Near steady temperature around 60. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 13 Mar Franklin

Mostly clear this Evening, then becoming partly cloudy. Lows in the upper 30s. North Winds around 5 Mph, becoming east after midnight.

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Meramec State Park Temperature Statistics

March Temperature

Washington Regional Airport (26.1 miles)

  • Lowest 1 March, 2026

    28.4 °F

  • Average March

    54 °F

  • Highest 10 March, 2026

    84.2 °F

Climate (2021–Present)

Washington Regional Airport (26.1 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    69.3 °F
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