Piasa Weather Forecast

    • 47
    • 65

    Mostly Sunny

    • 56
    • 77

    Mostly Sunny

    • 57
    • 78

    Mostly Sunny

    • 59
    • 80

    Rain Showers

    • 49
    • 73

    Chance Rain Showers

    • 47
    • 68

    Chance Rain Showers

Today 20 Apr Macoupin

Sunny. Highs in the mid 60s. Southeast Winds 5 to 10 Mph.

Tonight 20 Apr Macoupin

Clear in the Evening, then becoming partly cloudy. Not as cool with Lows in the upper 40s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Piasa Temperature Statistics

April Temperature

St. Louis Regional Airport (16.2 miles)

  • Lowest 5 April, 2026

    38.8 °F

  • Average April

    61.1 °F

  • Highest 3 April, 2026

    82.4 °F

Climate (2021–Present)

St. Louis Regional Airport (16.2 miles)

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  • Average Low 2021–2026

    46.4 °F

  • Average 2021–2026

    54.4 °F

  • Average High 2021–2026

    66.6 °F
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