South Branch Weather Forecast

    • 48
    • 59

    Chance Rain

    • 47
    • 69

    Chance Rain Showers

    • 40
    • 61

    Partly Sunny

    • 49
    • 60

    Rain Showers Likely

    • 50
    • 65

    Chance Rain Showers

    • 48
    • 65

    Mostly Cloudy

Today 27 Oct Watonwan

Not as cool. Cloudy with a 40 percent chance of rain in the Morning, then partly sunny in the afternoon. Highs in the upper 50s. South Winds 5 to 10 Mph.

Tonight 27 Oct Watonwan

Mostly cloudy. Lows around 50. South Winds 5 to 10 Mph.

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South Branch Temperature Statistics

October Temperature

St. James Municipal Airport (6.8 miles)

  • Lowest 17 October, 2026

    30.2 °F

  • Average October

    57.5 °F

  • Highest 10 October, 2026

    91.4 °F

Climate (2021–2026)

St. James Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    36.9 °F

  • Average 2021–2026

    47 °F

  • Average High 2021–2026

    57.2 °F
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