South Branch Weather Forecast

    • 42
    • 58

    Rain Showers

    • 39
    • 56

    Mostly Cloudy

    • 46
    • 66

    Mostly Cloudy

    • 48
    • 65

    Rain Showers

    • 45
    • 62

    Rain Showers

    • 44
    • 64

    Chance Rain Showers

Today 16 May Watonwan

Windy. Much cooler. Mostly cloudy. Chance of rain Showers early in the Morning, then rain Showers early in the afternoon. Rain Showers likely late in the afternoon. Highs in the upper 50s. Southwest Winds 20 to 25 Mph increasing to 25 to 35 Mph. Chance of Showers 90 percent.

Tonight 16 May Watonwan

Windy, Colder, cloudy. Chance of rain Showers in the Evening, then slight chance of rain Showers after midnight. Lows in the lower 40s. West Winds 20 to 30 Mph. Chance of Showers 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Branch Temperature Statistics

May Temperature

St. James Municipal Airport (6.8 miles)

  • Lowest 3 May, 2025

    32 °F

  • Average May

    63.9 °F

  • Highest 11 May, 2025

    91.4 °F

Climate (2020–Present)

St. James Municipal Airport (6.8 miles)

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  • Average Low 2020–2025

    36.7 °F

  • Average 2020–2025

    46.8 °F

  • Average High 2020–2025

    56.8 °F
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