Jefferson Weather Forecast

    • 33
    • 75

    Rain

    • 22
    • 43

    Chance Rain/Snow

    • 30
    • 52

    Mostly Sunny

    • 43
    • 70

    Mostly Sunny

    • 26
    • 68

    Partly Sunny

    • 23
    • 43

    Chance Snow

Today 14 Mar Union

Partly sunny. A chance of rain in the afternoon. Highs in the mid 70s. Southeast Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 50 percent.

Tonight 14 Mar Union

Rain. A chance of Thunderstorms in the Evening, then a slight chance of snow after midnight. Little or no snow accumulation. Windy and much cooler with Lows in the lower 30s. East Winds 10 to 15 Mph with Gusts up to 30 Mph, increasing to northwest 20 to 30 Mph with Gusts up to 50 Mph after midnight. Chance of precipitation 90 percent.

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Jefferson Temperature Statistics

March Temperature

Sioux City, Sioux Gateway Airport (16.2 miles)

  • Lowest 2 March, 2025

    18.8 °F

  • Average March

    37.6 °F

  • Highest 10 March, 2025

    73 °F

Climate (2020–Present)

Sioux City, Sioux Gateway Airport (16.2 miles)

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  • Average Low 2020–2025

    38.8 °F

  • Average 2020–2025

    50.5 °F

  • Average High 2020–2025

    62.3 °F
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