Castlewood State Park Weather Forecast

    • 41
    • 59

    Becoming Sunny

    • 36
    • 61

    Chance Rain

    • 17
    • 43

    Partly Sunny

    • 25
    • 33

    Partly Sunny

    • 19
    • 43

    Mostly Cloudy

    • 10
    • 30

    Partly Sunny

    • 14
    • 28

    Mostly Sunny

Today 12 Jan St. Louis

Sunny. Not as cool with Highs in the mid 50s. Temperature falling to around 50 late. Southwest Winds 5 to 10 Mph.

Tonight 12 Jan St. Louis

Partly cloudy this Evening, then becoming mostly clear. Not as cool with Lows in the upper 30s. Southwest Winds 5 to 10 Mph. Gusts up to 25 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Castlewood State Park Temperature Statistics

January Temperature

St. Louis, Spirit Of St. Louis Airport (9.3 miles)

  • Lowest 4 January, 2026

    19 °F

  • Average January

    43.4 °F

  • Highest 6 January, 2026

    68 °F

Climate (2021–Present)

St. Louis, Spirit Of St. Louis Airport (9.3 miles)

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    57.2 °F

  • Average High 2021–2026

    68.4 °F
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