South Branch Weather Forecast

    • -5
    • 12

    Partly Sunny

    • -7
    • 9

    Cold

    • -5
    • 7

    Cold

    • 10
    • 17

    Chance Snow

    • 13
    • 28

    Chance Snow

    • 10
    • 24

    Mostly Cloudy

Today 28 Jan Watonwan

Sunny. Highs around 12. Northwest Winds 10 to 15 Mph.

Tonight 28 Jan Watonwan

Partly cloudy. Lows around 5 below. Northwest Winds 5 to 10 Mph.

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South Branch Temperature Statistics

January Temperature

St. James Municipal Airport (6.8 miles)

  • Lowest 23 January, 2026

    -20.2 °F

  • Average January

    17.3 °F

  • Highest 13 January, 2026

    48.2 °F

Climate (2021–Present)

St. James Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    36.6 °F

  • Average 2021–2026

    46.7 °F

  • Average High 2021–2026

    56.8 °F
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