Thornton Weather Forecast

    • 48
    • 72

    Mostly Sunny

    • 46
    • 72

    Mostly Sunny

    • 49
    • 72

    Mostly Sunny

    • 51
    • 72

    Partly Sunny

    • 52
    • 74

    Mostly Cloudy

    • 50
    • 69

    Mostly Cloudy

    • 47
    • 64

    Partly Sunny

Today 21 Oct Southern Cook

Mostly cloudy in the Morning, then becoming partly cloudy. Highs in the mid 60s.

Tonight 21 Oct Southern Cook

Clear. Patchy fog after midnight. Lows in the upper 40s. Southeast Winds around 5 Mph in the Evening, becoming light and variable.

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Thornton Temperature Statistics

October Temperature

Lansing Municipal Airport (4.3 miles)

  • Lowest 19 October, 2026

    35.2 °F
  • Average October

    60.1 °F
  • Highest 12 October, 2026

    87.8 °F

Climate (2021–2026)

Lansing Municipal Airport (4.3 miles)

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  • Average Low 2021–2026

    42.4 °F
  • Average 2021–2026

    51.5 °F
  • Average High 2021–2026

    60.3 °F
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