Square Air Airport Weather Forecast

    • 47
    • 58

    Gradual Clearing

    • 57
    • 64

    Mostly Cloudy

    • 35
    • 64

    Mostly Sunny

    • 48
    • 59

    Mostly Sunny

    • 51
    • 74

    Mostly Sunny

    • 49
    • 71

    Partly Sunny

Today 16 Dec Collin

Mostly cloudy. A chance of Sprinkles in the afternoon. Highs in the upper 50s. South Winds around 10 Mph.

Tonight 16 Dec Collin

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 40s. South Winds 5 to 10 Mph.

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Square Air Airport Temperature Statistics

December Temperature

McKinney - McKinney National Airport (4.3 miles)

  • Lowest 2 December, 2025

    28.9 °F

  • Average December

    44.8 °F

  • Highest 12 December, 2025

    70 °F

Climate (2020–Present)

McKinney - McKinney National Airport (4.3 miles)

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  • Average Low 2020–2025

    55.9 °F

  • Average 2020–2025

    66.6 °F

  • Average High 2020–2025

    77.5 °F
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