South Branch Weather Forecast

    • 71
    • 89

    Patchy Smoke

    • 69
    • 91

    Patchy Smoke

    • 65
    • 87

    Rain Showers

    • 61
    • 79

    Chance Rain Showers

    • 61
    • 82

    Mostly Sunny

    • 63
    • 84

    Mostly Sunny

Today 28 Jul Watonwan

Mostly sunny. Patchy smoke through the day. Highs in the upper 80s. South Winds up to 5 Mph.

Tonight 28 Jul Watonwan

Partly cloudy. Patchy smoke. Lows around 70. Southeast Winds around 5 Mph shifting to the south after midnight.

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South Branch Temperature Statistics

July Temperature

St. James Municipal Airport (6.8 miles)

  • Lowest 23 July, 2026

    48.2 °F

  • Average July

    74.6 °F

  • Highest 26 July, 2026

    91.4 °F

Climate (2021–2026)

St. James Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    36.8 °F

  • Average 2021–2026

    46.9 °F

  • Average High 2021–2026

    57.1 °F
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