St Joseph Weather Forecast

    • 56
    • 76

    Slight Chance Thunderstorms

    • 46
    • 67

    Slight Chance Rain Showers

    • 50
    • 74

    Mostly Sunny

    • 52
    • 76

    Mostly Sunny

    • 57
    • 79

    Slight Chance Rain Showers

    • 58
    • 81

    Partly Sunny

Today 4 Sep Buchanan

Areas of smoke after midnight. Partly cloudy. Highs in the mid 70s. North Winds around 5 Mph, becoming southwest.

Tonight 4 Sep Buchanan

Mostly clear in the Evening, then partly cloudy with a chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the mid 50s. Southwest Winds 5 to 10 Mph, becoming northwest with Gusts up to 20 Mph after midnight. Chance of rain 30 percent.

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St Joseph Temperature Statistics

September Temperature

St. Joseph, Rosecrans Memorial Airport (3.7 miles)

  • Lowest 1 September, 2025

    61 °F

  • Average September

    65.2 °F

  • Highest 1 September, 2025

    66.9 °F

Climate (2020–Present)

St. Joseph, Rosecrans Memorial Airport (3.7 miles)

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  • Average Low 2020–2025

    43.6 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    66.6 °F
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