St John Weather Forecast

    • 68
    • 86

    Mostly Cloudy

    • 60
    • 76

    Rain Showers

    • 63
    • 76

    Rain Showers

    • 56
    • 75

    Chance Thunderstorms

    • 50
    • 71

    Mostly Sunny

    • 52
    • 74

    Partly Sunny

Today 28 Apr St. Louis

Mostly sunny. Not as cool. More humid with Highs in the mid 80s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 28 Apr St. Louis

Mostly cloudy. A chance of Showers and Thunderstorms after midnight. Not as cool with Lows in the upper 60s. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 30 percent.

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St John Temperature Statistics

April Temperature

St. Louis Lambert International Airport (2.5 miles)

  • Lowest 8 April, 2025

    32.6 °F

  • Average April

    58.6 °F

  • Highest 13 April, 2025

    84.7 °F

Climate (2020–Present)

St. Louis Lambert International Airport (2.5 miles)

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  • Average Low 2020–2025

    50.3 °F

  • Average 2020–2025

    59.6 °F

  • Average High 2020–2025

    69 °F
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