St Peters Weather Forecast

    • 77
    • 95

    Slight Chance Thunderstorms

    • 76
    • 96

    Slight Chance Thunderstorms

    • 73
    • 95

    Chance Thunderstorms

    • 73
    • 92

    Slight Chance Thunderstorms

    • 73
    • 91

    Slight Chance Thunderstorms

    • 72
    • 90

    Chance Thunderstorms

Today 2 Jul St. Charles

Sunny. A slight chance of Showers and Thunderstorms this afternoon. Hot with Highs in the mid 90s. South Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 109.

Tonight 2 Jul St. Charles

Partly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then mostly clear after midnight. Humid with Lows in the upper 70s. South Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 107 early in the evening.

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St Peters Temperature Statistics

July Temperature

St. Louis, Spirit Of St. Louis Airport (8.7 miles)

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Climate (2021–2026)

St. Louis, Spirit Of St. Louis Airport (8.7 miles)

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    57.4 °F

  • Average High 2021–2026

    68.9 °F
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