Lambert - St. Louis International Airport Weather Forecast

    • 75
    • 87

    Chance Thunderstorms

    • 78
    • 92

    Chance Thunderstorms

    • 78
    • 93

    Chance Thunderstorms

    • 78
    • 94

    Slight Chance Thunderstorms

    • 79
    • 96

    Mostly Sunny

    • 79
    • 98

    Hot

Today 18 Jul St. Louis

Patchy fog this morning. Mostly cloudy this Morning, then partly sunny with a chance of Showers and Thunderstorms this afternoon. Highs in the upper 80s. East Winds around 5 Mph. Chance of rain 30 percent.

Tonight 18 Jul St. Louis

Mostly cloudy in the Evening, then becoming partly cloudy. A chance of Showers and Thunderstorms. Humid with Lows in the lower 70s. South Winds around 5 Mph. Chance of rain 40 percent.

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Lambert - St. Louis International Airport Temperature Statistics

July Temperature

St. Louis Lambert International Airport (0 miles)

  • Lowest 2 July, 2025

    68 °F

  • Average July

    81.2 °F

  • Highest 11 July, 2025

    94.6 °F

Climate (2020–Present)

St. Louis Lambert International Airport (0 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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