Waterloo Weather Forecast

    • 65
    • 83

    Mostly Sunny

    • 65
    • 87

    Slight Chance Thunderstorms

    • 67
    • 87

    Chance Thunderstorms

    • 72
    • 90

    Slight Chance Thunderstorms

    • 71
    • 91

    Rain Showers Likely

    • 61
    • 84

    Chance Thunderstorms

    • 58
    • 80

    Chance Rain Showers

Today 1 Jul Jefferson

Mostly sunny. Northwest Winds 5 to 10 Mph.

Tonight 1 Jul Jefferson

Clear. Lows in the mid 60s. West Winds up to 5 Mph.

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Waterloo Temperature Statistics

July Temperature

Watertown (13 miles)

  • Lowest

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  • Average July

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  • Highest

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Climate (2020–Present)

Watertown (13 miles)

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  • Average Low 2020–2025

    36.4 °F

  • Average 2020–2025

    46.2 °F

  • Average High 2020–2025

    55.3 °F
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