Florissant Weather Forecast

    • 73
    • 89

    Mostly Sunny

    • 75
    • 92

    Slight Chance Thunderstorms

    • 77
    • 96

    Chance Thunderstorms

    • 71
    • 89

    Chance Thunderstorms

    • 72
    • 88

    Slight Chance Thunderstorms

    • 73
    • 90

    Chance Thunderstorms

Today 9 Jul St. Louis

Sunny. Highs in the upper 80s. Northwest Winds around 5 Mph.

Tonight 9 Jul St. Louis

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 70s. North Winds around 5 Mph, becoming southwest after midnight.

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Florissant Temperature Statistics

July Temperature

St. Louis Lambert International Airport (3.7 miles)

  • Lowest 2 July, 2025

    68 °F

  • Average July

    81.6 °F

  • Highest 4 July, 2025

    91.9 °F

Climate (2020–Present)

St. Louis Lambert International Airport (3.7 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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