Aztalan State Park Weather Forecast

    • 26
    • 48

    Becoming Sunny

    • 40
    • 53

    Partly Sunny

    • 43
    • 72

    Partly Sunny

    • 51
    • 71

    Mostly Sunny

    • 58
    • 78

    Rain Showers Likely

    • 41
    • 69

    Rain Showers Likely

Today 19 Apr Jefferson

Partly sunny. Chance of Sprinkles and Flurries in the Morning, then slight chance of snow Showers late in the morning. Chance of light rain Showers in the late morning and early afternoon. Highs in the upper 40s. Northwest Winds 5 to 15 Mph. Chance of precipitation 20 percent.

Tonight 19 Apr Jefferson

Mostly clear. Widespread frost after midnight. Lows in the mid 20s. Northwest Winds up to 10 Mph shifting to the northeast after midnight.

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Aztalan State Park Temperature Statistics

April Temperature

Watertown (9.9 miles)

  • Lowest 7 April, 2026

    19.6 °F

  • Average April

    46.3 °F

  • Highest 13 April, 2026

    73.2 °F

Climate (2021–Present)

Watertown (9.9 miles)

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  • Average Low 2021–2026

    35.8 °F

  • Average 2021–2026

    45.6 °F

  • Average High 2021–2026

    54.7 °F
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