Jefferson Weather Forecast

    • 41
    • 63

    Decreasing Clouds

    • 39
    • 68

    Becoming Sunny

    • 36
    • 56

    Partly Sunny

    • 43
    • 62

    Mostly Cloudy

    • 34
    • 55

    Mostly Cloudy

    • 27
    • 55

    Partly Sunny

    • 24
    • 46

    Partly Sunny

Today 3 Nov Union

Sunny. Highs in the lower 60s. West Winds 5 to 10 Mph.

Tonight 3 Nov Union

Mostly cloudy this Evening, then becoming partly cloudy. Lows around 40. South Winds 5 to 10 Mph.

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Jefferson Temperature Statistics

November Temperature

Sioux City, Sioux Gateway Airport (16.2 miles)

  • Lowest 1 November, 2025

    27 °F
  • Average November

    38.7 °F
  • Highest 1 November, 2025

    48 °F

Climate (2020–Present)

Sioux City, Sioux Gateway Airport (16.2 miles)

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  • Average Low 2020–2025

    39 °F
  • Average 2020–2025

    50.9 °F
  • Average High 2020–2025

    62.8 °F
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