South Haven Weather Forecast

    • 21
    • 41

    Becoming Sunny

    • 21
    • 29

    Mostly Sunny

    • 36
    • 40

    Mostly Cloudy

    • 31
    • 46

    Mostly Cloudy

    • 44
    • 44

    Chance Rain

    • 41
    • 57

    Mostly Cloudy

Today 20 Dec Porter

Mostly cloudy. Breezy. Highs in the lower 40s. South Winds 15 to 20 Mph, becoming west 10 to 15 Mph in the afternoon. Gusts up to 30 Mph.

Tonight 20 Dec Porter

Mostly clear. Lows in the lower 20s. West Winds 10 to 15 Mph.

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South Haven Temperature Statistics

December Temperature

Valparaiso Porter County Municipal Airport (9.3 miles)

  • Lowest 5 December, 2025

    -2 °F

  • Average December

    23.3 °F

  • Highest 18 December, 2025

    50 °F

Climate (2020–Present)

Valparaiso Porter County Municipal Airport (9.3 miles)

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  • Average Low 2020–2025

    42.5 °F

  • Average 2020–2025

    51.9 °F

  • Average High 2020–2025

    61.4 °F
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