Thornton Weather Forecast

    • 67
    • 83

    Severe Tstms

    • 67
    • 77

    Rain Showers Likely

    • 69
    • 80

    Chance Thunderstorms

    • 72
    • 84

    Chance Thunderstorms

    • 68
    • 85

    Chance Thunderstorms

    • 63
    • 78

    Partly Sunny

    • 65
    • 80

    Partly Sunny

Today 12 Aug Southern Cook

Mostly cloudy. A chance of Showers and a slight chance of Thunderstorms. Temperatures in the lower 80s. West Winds 5 to 10 Mph. Chance of precipitation 20 percent.

Tonight 12 Aug Southern Cook

Mostly cloudy in the Evening, then becoming partly cloudy. A chance of Showers and a slight chance of Thunderstorms early in the evening. Patchy fog after midnight. Humid. Lows in the upper 60s. South Winds around 5 Mph in the Evening, becoming light and variable. Chance of precipitation 20 percent.

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Thornton Temperature Statistics

August Temperature

Lansing Municipal Airport (4.3 miles)

  • Lowest 3 August, 2026

    60.4 °F

  • Average August

    73 °F

  • Highest 10 August, 2026

    86.9 °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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