Royal Lakes Weather Forecast

    • 67
    • 86

    Chance Thunderstorms

    • 65
    • 83

    Mostly Sunny

    • 67
    • 86

    Mostly Sunny

    • 69
    • 88

    Mostly Sunny

    • 72
    • 89

    Partly Sunny

    • 73
    • 92

    Chance Thunderstorms

Today 30 Jun Macoupin

Partly sunny. A slight chance of Showers and Thunderstorms in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Highs in the upper 80s. West Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 30 Jun Macoupin

Mostly cloudy. Near steady temperature in the lower 70s. West Winds around 5 Mph.

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Royal Lakes Temperature Statistics

June Temperature

St. Louis Regional Airport (15.5 miles)

  • Lowest 2 June, 2025

    55.6 °F

  • Average June

    73 °F

  • Highest 25 June, 2025

    95 °F

Climate (2020–Present)

St. Louis Regional Airport (15.5 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    53.8 °F

  • Average High 2020–2025

    65.9 °F
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