Frontenac Weather Forecast

    • 36
    • 44

    Cloudy

    • 39
    • 53

    Mostly Cloudy

    • 39
    • 50

    Rain Showers

    • 23
    • 46

    Mostly Cloudy

    • 29
    • 39

    Chance Rain/Snow

    • 34
    • 44

    Chance Rain/Snow

Today 29 Mar Jefferson

Partly sunny and not as cold with Highs in the mid 40s. South Winds 5 to 10 Mph, becoming southwest 10 to 15 Mph.

Tonight 29 Mar Jefferson

Cloudy with a 40 percent chance of snow Showers. Near steady Temperatures Ranging from the lower 20s on the tug hill to the upper 20s across the lower Elevations. Light southwest Winds.

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Frontenac Temperature Statistics

March Temperature

Watertown, Watertown International Airport (18 miles)

  • Lowest 2 March, 2026

    -2.3 °F

  • Average March

    34.5 °F

  • Highest 9 March, 2026

    67.6 °F

Climate (2021–Present)

Watertown, Watertown International Airport (18 miles)

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  • Average Low 2021–2026

    38.4 °F

  • Average 2021–2026

    48.3 °F

  • Average High 2021–2026

    57.5 °F
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