South Branch Wildlife Management Area Weather Forecast

    • 39
    • 66

    Becoming Sunny

    • 54
    • 73

    Mostly Sunny

    • 50
    • 71

    Rain Showers

    • 47
    • 64

    Mostly Sunny

    • 55
    • 74

    Partly Sunny

    • 61
    • 83

    Slight Chance Thunderstorms

Today 11 May Hardy

Cloudy with a slight chance of Showers in the Morning, then mostly sunny in the afternoon. Highs in the lower 60s. Northwest Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 11 May Hardy

Mostly cloudy. Lows in the upper 40s. North Winds 5 to 10 Mph.

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South Branch Wildlife Management Area Temperature Statistics

May Temperature

Petersburg, Grant County Airport (16.2 miles)

  • Lowest 1 May, 2026

    33.8 °F

  • Average May

    56.8 °F

  • Highest 5 May, 2026

    82.9 °F

Climate (2021–Present)

Petersburg, Grant County Airport (16.2 miles)

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  • Average Low 2021–2026

    44.2 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    67.6 °F
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