Meramec State Park Weather Forecast

    • 25
    • 48

    Mostly Sunny

    • 13
    • 40

    Partly Sunny

    • 3
    • 18

    Snow Likely

    • 8
    • 13

    Snow

    • -1
    • 19

    Slight Chance Snow

    • 6
    • 20

    Mostly Sunny

    • 16
    • 35

    Partly Sunny

Today 21 Jan Franklin

Sunny. Highs in the mid 40s. West Winds 5 to 10 Mph with Gusts up to 25 Mph.

Tonight 21 Jan Franklin

Mostly clear this Evening, then becoming partly cloudy. Lows in the mid 20s. West Winds 5 to 10 Mph, becoming northwest after midnight. Gusts up to 25 Mph.

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  • Temperature Real-Time

Meramec State Park Temperature Statistics

January Temperature

Washington Regional Airport (26.1 miles)

  • Lowest 19 January, 2026

    8.6 °F

  • Average January

    37.9 °F

  • Highest 6 January, 2026

    68 °F

Climate (2021–Present)

Washington Regional Airport (26.1 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    69.2 °F
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