Henderson Bay Weather Forecast

    • 60
    • 73

    Mostly Cloudy

    • 53
    • 70

    Partly Sunny

    • 48
    • 63

    Mostly Sunny

    • 54
    • 65

    Mostly Sunny

    • 62
    • 72

    Partly Sunny

    • 64
    • 73

    Mostly Cloudy

Today 17 Sep Jefferson

Some patchy fog in the Morning, otherwise partly sunny. Highs Ranging from the lower 70s on the tug hill to the upper 70s across the lower Elevations. Light south Winds.

Tonight 17 Sep Jefferson

Mostly cloudy with some patchy fog developing late. Near steady Temperatures in the upper 50s. Light Winds, becoming southeast 5 to 10 Mph.

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Henderson Bay Temperature Statistics

September Temperature

Watertown, Watertown International Airport (9.9 miles)

  • Lowest 9 September, 2025

    39.9 °F

  • Average September

    61.4 °F

  • Highest 4 September, 2025

    80.1 °F

Climate (2020–Present)

Watertown, Watertown International Airport (9.9 miles)

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  • Average Low 2020–2025

    38.9 °F

  • Average 2020–2025

    48.7 °F

  • Average High 2020–2025

    57.7 °F
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