Waterloo Weather Forecast

    • 32
    • 43

    Increasing Clouds

    • 22
    • 46

    Snow Likely

    • 10
    • 29

    Snow Likely

    • 19
    • 25

    Mostly Cloudy

    • 13
    • 30

    Snow Likely

    • 8
    • 21

    Chance Snow

Today 12 Jan Jefferson

Mostly sunny. Highs in the lower 40s. West Winds 5 to 15 Mph.

Tonight 12 Jan Jefferson

Mostly clear. Near steady temperature in the mid 20s. Southwest Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Waterloo Temperature Statistics

January Temperature

Watertown (13 miles)

  • Lowest 4 January, 2026

    4.5 °F

  • Average January

    27.1 °F

  • Highest 9 January, 2026

    55.2 °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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