Royal Lakes Weather Forecast

    • 49
    • 77

    Mostly Cloudy

    • 48
    • 76

    Mostly Cloudy

    • 50
    • 75

    Mostly Cloudy

    • 53
    • 78

    Mostly Sunny

    • 54
    • 83

    Partly Sunny

    • 56
    • 81

    Mostly Cloudy

    • 57
    • 75

    Chance Rain Showers

Today 25 Oct Macoupin

Partly sunny. Near steady temperature in the upper 70s. South Winds around 5 Mph.

Tonight 25 Oct Macoupin

Mostly cloudy. Lows in the upper 40s. Southeast Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Royal Lakes Temperature Statistics

October Temperature

St. Louis Regional Airport (15.5 miles)

  • Lowest 18 October, 2026

    36 °F

  • Average October

    59.7 °F

  • Highest 12 October, 2026

    91.4 °F

Climate (2021–2026)

St. Louis Regional Airport (15.5 miles)

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  • Average Low 2021–2026

    46.5 °F

  • Average 2021–2026

    54.5 °F

  • Average High 2021–2026

    66.7 °F
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