Collin County Regional Airport at McKinney Weather Forecast

    • 50
    • 72

    Slight Chance Rain Showers

    • 50
    • 64

    Partly Sunny

    • 60
    • 80

    Mostly Sunny

    • 63
    • 85

    Partly Sunny

    • 62
    • 87

    Chance Thunderstorms

    • 58
    • 77

    Chance Thunderstorms

Today 27 Mar Collin

Cloudy with a 20 percent chance of Showers. Breezy and much cooler with Highs in the lower 70s. Temperatures falling into the upper 50s late. North Winds 15 to 25 Mph with wind Gusts up to 35 Mph are possible.

Tonight 27 Mar Collin

Cloudy. A 20 percent chance of Showers in the evening. Cooler with Lows in the lower 50s. Northeast Winds 15 to 20 Mph with wind Gusts up to 35 Mph are Possible, Diminishing to 10 to 15 Mph after midnight.

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Collin County Regional Airport at McKinney Temperature Statistics

March Temperature

McKinney - McKinney National Airport (0 miles)

  • Lowest 16 March, 2026

    29.6 °F

  • Average March

    66.1 °F

  • Highest 22 March, 2026

    91.9 °F

Climate (2021–Present)

McKinney - McKinney National Airport (0 miles)

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  • Average Low 2021–2026

    56.3 °F

  • Average 2021–2026

    67.1 °F

  • Average High 2021–2026

    78 °F
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