Waterloo Weather Forecast

    • 23
    • 56

    Rain Likely

    • 23
    • 42

    Partly Sunny

    • 34
    • 49

    Partly Sunny

    • 45
    • 64

    Partly Sunny

    • 42
    • 69

    Chance Rain

    • 45
    • 60

    Chance Rain

Today 26 Mar Jefferson

Cooler. Mostly cloudy in the Morning, then chance of light rain late in the morning. Cloudy with light rain likely in the afternoon. Highs in the upper 50s. Northeast Winds 5 to 15 Mph. Chance of rain 70 percent.

Tonight 26 Mar Jefferson

Colder. Cloudy with a 20 percent chance of light rain in the Evening, then partly cloudy in the late evening and overnight. Lows in the mid 20s. Northeast Winds 10 to 20 Mph.

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Waterloo Temperature Statistics

March Temperature

Watertown (13 miles)

  • Lowest 1 March, 2026

    7.2 °F

  • Average March

    37.8 °F

  • Highest 21 March, 2026

    72.7 °F

Climate (2021–Present)

Watertown (13 miles)

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  • Average Low 2021–2026

    35.8 °F

  • Average 2021–2026

    45.6 °F

  • Average High 2021–2026

    54.6 °F
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