Rock Lake Weather Forecast

    • 41
    • 69

    Increasing Clouds

    • 24
    • 43

    Mostly Cloudy

    • 31
    • 46

    Partly Sunny

    • 34
    • 56

    Mostly Cloudy

    • 41
    • 52

    Chance Rain

    • 27
    • 57

    Slight Chance Rain

Today 21 Mar Jefferson

Partly sunny in the morning then clearing. Highs around 70. South Winds 5 to 15 Mph with Gusts to around 30 Mph.

Tonight 21 Mar Jefferson

Partly cloudy until early Morning, then mostly cloudy with a 30 percent chance of light rain early in the morning. Lows in the lower 40s. West Winds 5 to 10 Mph shifting to the northeast after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Rock Lake Temperature Statistics

March Temperature

Watertown (11.8 miles)

  • Lowest 1 March, 2026

    7.2 °F

  • Average March

    36.6 °F

  • Highest 9 March, 2026

    68.9 °F

Climate (2021–Present)

Watertown (11.8 miles)

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

  • Average Low 2021–2026

    35.8 °F

  • Average 2021–2026

    45.6 °F

  • Average High 2021–2026

    54.7 °F
Get WillyWeather+ to remove ads