McKinney Weather Forecast

    • 69
    • 85

    Chance Thunderstorms

    • 67
    • 87

    Slight Chance Thunderstorms

    • 67
    • 90

    Mostly Sunny

    • 69
    • 94

    Mostly Sunny

    • 67
    • 93

    Chance Rain Showers

    • 68
    • 88

    Slight Chance Thunderstorms

Today 1 Sep Collin

Mostly sunny with a 40 percent chance of Showers and Thunderstorms. Highs in the mid 80s. Northeast Winds around 5 Mph.

Tonight 1 Sep Collin

Mostly clear. Lows in the upper 60s. East Winds around 5 Mph in the Evening, becoming light and variable.

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McKinney Temperature Statistics

September Temperature

McKinney - McKinney National Airport (3.1 miles)

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Climate (2020–Present)

McKinney - McKinney National Airport (3.1 miles)

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  • Average Low 2020–2025

    55.7 °F
  • Average 2020–2025

    66.4 °F
  • Average High 2020–2025

    77.2 °F
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