Waterloo Weather Forecast

    • 52
    • 71

    Mostly Sunny

    • 47
    • 71

    Mostly Sunny

    • 43
    • 66

    Partly Sunny

    • 50
    • 68

    Mostly Sunny

    • 58
    • 75

    Mostly Sunny

    • 53
    • 78

    Partly Sunny

Today 6 Oct Jefferson

Sunny. Highs in the lower 70s. Southwest Winds 10 to 20 Mph.

Tonight 6 Oct Jefferson

Mostly clear. Lows in the lower 50s. Southwest Winds 5 to 15 Mph.

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Waterloo Temperature Statistics

October Temperature

Watertown (13 miles)

  • Lowest 3 October, 2026

    38.3 °F

  • Average October

    55.8 °F

  • Highest 3 October, 2026

    68 °F

Climate (2021–2026)

Watertown (13 miles)

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  • Average Low 2021–2026

    35.2 °F

  • Average 2021–2026

    44.8 °F

  • Average High 2021–2026

    53.8 °F
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