Wellston Weather Forecast

    • 75
    • 91

    Chance Thunderstorms

    • 76
    • 91

    Thunderstorms Likely

    • 76
    • 93

    Slight Chance Thunderstorms

    • 74
    • 92

    Mostly Sunny

    • 77
    • 95

    Mostly Sunny

    • 72
    • 93

    Mostly Sunny

Today 16 Jul St. Louis

Patchy fog in the morning. Sunny with a slight chance of Showers and Thunderstorms in the Morning, then partly sunny with a chance of Showers and Thunderstorms in the afternoon. Humid with Highs around 90. South Winds around 5 Mph. Chance of rain 50 percent. Heat index Values up to 101.

Tonight 16 Jul St. Louis

Mostly cloudy with a chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Humid with Lows in the mid 70s. Southwest Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Wellston Temperature Statistics

July Temperature

St. Louis Lambert International Airport (6.8 miles)

  • Lowest 13 July, 2026

    68 °F

  • Average July

    81.5 °F

  • Highest 2 July, 2026

    96.7 °F

Climate (2021–2026)

St. Louis Lambert International Airport (6.8 miles)

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  • Average Low 2021–2026

    50.6 °F

  • Average 2021–2026

    60.1 °F

  • Average High 2021–2026

    69.7 °F
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