Thornton Weather Forecast

    • 60
    • 78

    Mostly Sunny

    • 65
    • 86

    Partly Sunny

    • 65
    • 80

    Rain Showers

    • 64
    • 74

    Chance Thunderstorms

    • 62
    • 76

    Slight Chance Thunderstorms

    • 65
    • 80

    Mostly Sunny

    • 67
    • 84

    Partly Sunny

Today 29 Jul Southern Cook

Sunny. Temperatures in the upper 70s. Northeast Winds around 10 Mph.

Tonight 29 Jul Southern Cook

Clear. Patchy fog late. Lows around 60. Northeast Winds 5 to 10 Mph in the Evening, becoming light and variable.

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Thornton Temperature Statistics

July Temperature

Lansing Municipal Airport (4.3 miles)

  • Lowest 23 July, 2026

    50 °F

  • Average July

    75.3 °F

  • Highest 15 July, 2026

    94.1 °F

Climate (2021–2026)

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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