Waterloo Weather Forecast

    • 68
    • 84

    Rain Showers Likely

    • 53
    • 80

    Partly Sunny

    • 54
    • 76

    Mostly Sunny

    • 59
    • 80

    Partly Sunny

    • 61
    • 83

    Mostly Sunny

    • 64
    • 86

    Partly Sunny

Today 20 Jul Jefferson

Mostly sunny. Highs in the mid 80s. Southwest Winds around 15 Mph.

Tonight 20 Jul Jefferson

Mostly cloudy in the evening then becoming partly cloudy. Showers likely and chance of Thunderstorms in the Evening, then slight chance of light Showers and Thunderstorms late in the evening. Some Thunderstorms may be severe. Lows in the upper 60s. West Winds 10 to 15 Mph. Chance of precipitation 70 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Waterloo Temperature Statistics

July Temperature

Watertown (13 miles)

  • Lowest 7 July, 2026

    53.2 °F

  • Average July

    76.6 °F

  • Highest 14 July, 2026

    95.4 °F

Climate (2021–2026)

Watertown (13 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    35.2 °F

  • Average 2021–2026

    44.9 °F

  • Average High 2021–2026

    54 °F
Get WillyWeather+ to remove ads