Stewartsville Weather Forecast

    • 69
    • 83

    Rain Showers Likely

    • 69
    • 84

    Chance Rain Showers

    • 71
    • 88

    Chance Thunderstorms

    • 66
    • 84

    Rain Showers Likely

    • 62
    • 75

    Rain Showers Likely

    • 59
    • 71

    Slight Chance Rain Showers

Today 16 Sep De Kalb

Showers with a chance of Thunderstorms this Morning, then partly sunny this afternoon. Some Thunderstorms may produce heavy rainfall this morning. Locally heavy rainfall possible this morning. Highs in the lower 80s. East Winds 5 to 10 Mph. Chance of rain near 100 percent.

Tonight 16 Sep De Kalb

Partly cloudy. A slight chance of Showers and Thunderstorms after midnight. Lows in the upper 60s. East Winds around 5 Mph, becoming south after midnight. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Stewartsville Temperature Statistics

September Temperature

St. Joseph, Rosecrans Memorial Airport (21.7 miles)

  • Lowest 13 September, 2026

    57.7 °F

  • Average September

    79.5 °F

  • Highest 5 September, 2026

    100.7 °F

Climate (2021–2026)

St. Joseph, Rosecrans Memorial Airport (21.7 miles)

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  • Average Low 2021–2026

    44 °F

  • Average 2021–2026

    55.9 °F

  • Average High 2021–2026

    67.6 °F
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