Waterloo Weather Forecast

    • -16
    • 15

    Flurries

    • -16
    • -5

    Cold

    • -5
    • 1

    Cold

    • -5
    • 10

    Chance Snow

    • -2
    • 9

    Cold

    • 1
    • 18

    Mostly Cloudy

Today 22 Jan Jefferson

Mostly cloudy. Chance of Flurries in the late morning and early afternoon. Slight chance of light snow late in the afternoon. Highs around 16. West Winds 10 to 20 Mph. Chance of snow 20 percent.

Tonight 22 Jan Jefferson

Mostly cloudy with numerous snow Showers after Midnight, then partly cloudy with scattered Flurries early in the morning. Little new snow accumulation. Lows around 8. West Winds 10 to 15 Mph with Gusts to around 30 Mph. Chance of snow 70 percent.

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Waterloo Temperature Statistics

January Temperature

Watertown (13 miles)

  • Lowest 19 January, 2026

    -4.9 °F

  • Average January

    24.4 °F

  • Highest 9 January, 2026

    55.2 °F

Climate (2021–Present)

Watertown (13 miles)

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  • Average Low 2021–2026

    35.6 °F

  • Average 2021–2026

    45.5 °F

  • Average High 2021–2026

    54.5 °F
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