Aztalan State Park Weather Forecast

    • 53
    • 81

    Becoming Sunny

    • 45
    • 67

    Chance Rain Showers

    • 62
    • 71

    Rain Showers

    • 55
    • 77

    Chance Rain Showers

    • 57
    • 72

    Chance Rain Showers

    • 53
    • 74

    Chance Rain Showers

Today 12 Sep Jefferson

Partly sunny. Highs in the lower 80s. Southwest Winds 5 to 15 Mph shifting to the northwest in the afternoon.

Tonight 12 Sep Jefferson

Partly cloudy then becoming clear in the late evening and early morning then becoming partly cloudy. Lows in the mid 50s. Northwest Winds up to 10 Mph.

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Aztalan State Park Temperature Statistics

September Temperature

Watertown (9.9 miles)

  • Lowest 7 September, 2026

    54.9 °F

  • Average September

    72.1 °F

  • Highest 1 September, 2026

    87.3 °F

Climate (2021–2026)

Watertown (9.9 miles)

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  • Average Low 2021–2026

    35.3 °F

  • Average 2021–2026

    44.9 °F

  • Average High 2021–2026

    53.9 °F
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