Thornton Weather Forecast

    • 38
    • 56

    Becoming Sunny

    • 47
    • 64

    Chance Rain Showers

    • 57
    • 75

    Chance Rain Showers

    • 59
    • 86

    Rain Showers Likely

    • 63
    • 82

    Chance Thunderstorms

    • 62
    • 89

    Rain Showers Likely

Today 13 May Southern Cook

Partly cloudy in the Morning, then becoming mostly cloudy. Highs in the upper 50s. North Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 13 May Southern Cook

Mostly clear. Lows in the upper 30s. North Winds 5 to 10 Mph, becoming west after midnight.

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Thornton Temperature Statistics

May Temperature

Lansing Municipal Airport (4.3 miles)

  • Lowest 2 May, 2026

    28.6 °F

  • Average May

    51.3 °F

  • Highest 4 May, 2026

    79.7 °F

Climate (2021–Present)

Lansing Municipal Airport (4.3 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    51.6 °F

  • Average High 2021–2026

    60.5 °F
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