St Joseph Weather Forecast

    • 69
    • 94

    Increasing Clouds

    • 62
    • 84

    Chance Rain Showers

    • 59
    • 75

    Chance Rain Showers

    • 58
    • 74

    Slight Chance Thunderstorms

    • 57
    • 74

    Mostly Cloudy

    • 55
    • 76

    Partly Sunny

Today 20 Sep Clark

Mostly sunny. Highs in the lower 90s. Southwest Winds 5 to 10 Mph.

Tonight 20 Sep Clark

Partly cloudy. Isolated Thunderstorms after midnight. Lows in the upper 60s. Northwest Winds 5 to 10 Mph shifting to the northeast after midnight. Chance of Thunderstorms 20 percent.

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St Joseph Temperature Statistics

September Temperature

Louisville, Bowman Field Airport (13.7 miles)

  • Lowest 14 September, 2026

    60.7 °F

  • Average September

    81.5 °F

  • Highest 3 September, 2026

    98.7 °F

Climate (2021–2026)

Louisville, Bowman Field Airport (13.7 miles)

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  • Average Low 2021–2026

    48.9 °F

  • Average 2021–2026

    58.8 °F

  • Average High 2021–2026

    68.6 °F
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