Collin County Regional Airport at McKinney Weather Forecast

    • 55
    • 90

    Chance Thunderstorms

    • 62
    • 71

    Slight Chance Thunderstorms

    • 65
    • 78

    Thunderstorms Likely

    • 63
    • 77

    Thunderstorms

    • 58
    • 76

    Thunderstorms Likely

    • 59
    • 79

    Slight Chance Thunderstorms

Today 21 May Collin

Mostly cloudy with a slight chance of Showers and Thunderstorms in the Morning, then partly sunny with a chance of Showers and Thunderstorms in the afternoon. Highs around 90. Southwest Winds 15 to 20 Mph. Chance of rain 50 percent.

Tonight 21 May Collin

Mostly cloudy with a 50 percent chance of Showers and Thunderstorms. Much cooler. Less humid with Lows in the upper 50s. North Winds 15 to 20 Mph with Gusts up to 30 Mph, Diminishing to 10 to 15 Mph after midnight.

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Collin County Regional Airport at McKinney Temperature Statistics

May Temperature

McKinney - McKinney National Airport (0 miles)

  • Lowest 1 May, 2022

    51.1 °F
  • Average May

    75.6 °F
  • Highest 18 May, 2022

    91.9 °F

Climate (2010–Present)

McKinney - McKinney National Airport (0 miles)

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  • Average Low 2010–Present

    54.3 °F
  • Average 2010–Present

    64.3 °F
  • Average High 2010–Present

    75 °F
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