Frontenac Weather Forecast

    • 17
    • 28

    Increasing Clouds

    • 23
    • 31

    Mostly Cloudy

    • 33
    • 44

    Mostly Cloudy

    • 32
    • 48

    Mostly Cloudy

    • 38
    • 49

    Rain Showers

    • 36
    • 54

    Rain Showers Likely

Today 27 Mar Jefferson

Mostly sunny and much Colder with Highs around 30. North Winds 10 to 15 Mph, Diminishing to 5 to 10 Mph.

Tonight 27 Mar Jefferson

Partly to mostly cloudy. Lows 15 to 20. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Frontenac Temperature Statistics

March Temperature

Watertown, Watertown International Airport (18 miles)

  • Lowest 2 March, 2026

    -2.3 °F

  • Average March

    33.4 °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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