Meramec State Park Weather Forecast

    • 36
    • 52

    Slight Chance Rain

    • 42
    • 53

    Partly Sunny

    • 39
    • 64

    Mostly Cloudy

    • 34
    • 58

    Partly Sunny

    • 43
    • 52

    Chance Rain

    • 38
    • 58

    Rain Likely

Today 31 Jan Franklin

Patchy dense fog in the morning. Cloudy with a 20 percent chance of rain. Highs in the lower 50s. West Winds 5 to 10 Mph with Gusts up to 25 Mph.

Tonight 31 Jan Franklin

Cloudy. Lows in the mid 30s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming north after midnight.

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Meramec State Park Temperature Statistics

January Temperature

Washington Regional Airport (26.1 miles)

  • Lowest 21 January, 2025

    -0.4 °F
  • Average January

    27 °F
  • Highest 17 January, 2025

    55.4 °F

Climate (2020–Present)

Washington Regional Airport (26.1 miles)

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  • Average Low 2020–2025

    47.2 °F
  • Average 2020–2025

    57.5 °F
  • Average High 2020–2025

    68.2 °F
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