Aztalan State Park Weather Forecast

    • -5
    • 12

    Partly Sunny

    • -3
    • 11

    Cold

    • 2
    • 12

    Partly Sunny

    • 2
    • 19

    Partly Sunny

    • 12
    • 23

    Chance Snow

    • 8
    • 25

    Mostly Cloudy

Today 28 Jan Jefferson

Mostly sunny. Highs around 12. West Winds 5 to 15 Mph.

Tonight 28 Jan Jefferson

Mostly clear. Lows around 6 below. Northwest Winds 5 to 10 Mph.

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Aztalan State Park Temperature Statistics

January Temperature

Watertown (9.9 miles)

  • Lowest 23 January, 2026

    -17.5 °F

  • Average January

    19 °F

  • Highest 9 January, 2026

    55.2 °F

Climate (2021–Present)

Watertown (9.9 miles)

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  • Average Low 2021–2026

    35.6 °F

  • Average 2021–2026

    45.4 °F

  • Average High 2021–2026

    54.5 °F
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