Waterloo Weather Forecast

    • 24
    • 31

    Decreasing Clouds

    • 31
    • 41

    Partly Sunny

    • 22
    • 45

    Chance Rain/Snow

    • 13
    • 28

    Partly Sunny

    • 23
    • 29

    Chance Snow

    • 15
    • 32

    Chance Snow

Today 11 Jan Jefferson

Partly sunny. Highs in the lower 30s. Northwest Winds 5 to 20 Mph.

Tonight 11 Jan Jefferson

Light snow. Little new snow accumulation. Near steady temperature in the lower 20s. Northwest Winds 15 to 20 Mph. Chance of snow 90 percent.

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Waterloo Temperature Statistics

January Temperature

Watertown (13 miles)

  • Lowest 4 January, 2026

    4.5 °F

  • Average January

    25.8 °F

  • Highest 8 January, 2026

    53.2 °F

Climate (2021–Present)

Watertown (13 miles)

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  • Average Low 2021–2026

    35.7 °F

  • Average 2021–2026

    45.5 °F

  • Average High 2021–2026

    54.5 °F
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