Royal Lakes Weather Forecast

    • 46
    • 49

    Rain Showers

    • 52
    • 60

    Rain Showers

    • 53
    • 66

    Rain Showers Likely

    • 56
    • 76

    Rain Showers

    • 41
    • 66

    Slight Chance Thunderstorms

    • 46
    • 65

    Mostly Sunny

Today 3 Mar Macoupin

Showers. Isolated Thunderstorms this Morning, then scattered Thunderstorms this afternoon. Patchy fog. Highs in the upper 40s. East Winds around 5 Mph. Chance of rain near 100 percent.

Tonight 3 Mar Macoupin

Showers with a chance of Thunderstorms. Patchy fog. Lows in the mid 40s. Northeast Winds 5 to 10 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Royal Lakes Temperature Statistics

March Temperature

St. Louis Regional Airport (15.5 miles)

  • Lowest 1 March, 2026

    26.6 °F

  • Average March

    33.3 °F

  • Highest 1 March, 2026

    44.6 °F

Climate (2021–Present)

St. Louis Regional Airport (15.5 miles)

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  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    54.2 °F

  • Average High 2021–2026

    66.5 °F
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