South Milwaukee Weather Forecast

    • 62
    • 66

    Rain Showers

    • 51
    • 68

    Rain Showers

    • 49
    • 61

    Mostly Sunny

    • 49
    • 60

    Partly Sunny

    • 47
    • 64

    Mostly Sunny

    • 46
    • 58

    Mostly Sunny

    • 51
    • 60

    Partly Sunny

Today 30 Sep Milwaukee

Partly sunny. A 20 percent chance of light rain Showers in the afternoon. Highs in the upper 60s.

Tonight 30 Sep Milwaukee

Patchy fog through the night. Chance of light Showers in the evening. Showers in the late evening and overnight. Slight chance of Thunderstorms after midnight. Near steady temperature in the mid 60s. Southwest Winds 5 to 10 Mph. Chance of precipitation 90 percent.

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South Milwaukee Temperature Statistics

September Temperature

Milwaukee, General Mitchell International Airport (3.7 miles)

  • Lowest 27 September, 2026

    47.6 °F

  • Average September

    66.7 °F

  • Highest 2 September, 2026

    90.6 °F

Climate (2021–2026)

Milwaukee, General Mitchell International Airport (3.7 miles)

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  • Average Low 2021–2026

    43.6 °F

  • Average 2021–2026

    51.3 °F

  • Average High 2021–2026

    59 °F
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