Marcum Weather Forecast

    • 39
    • 60

    Partly Sunny

    • 34
    • 45

    Slight Chance Rain Showers

    • 39
    • 53

    Partly Sunny

    • 41
    • 61

    Mostly Sunny

    • 34
    • 58

    Mostly Sunny

    • 39
    • 57

    Mostly Sunny

Today 3 Dec Collin

Sunny. Not as cool with Highs in the upper 50s. South Winds 10 to 15 Mph.

Tonight 3 Dec Collin

Mostly cloudy. A less than 20 percent chance of Showers after midnight. Lows in the upper 30s. East Winds 5 to 10 Mph, becoming north 10 to 15 Mph after midnight.

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Marcum Temperature Statistics

December Temperature

McKinney - McKinney National Airport (10.6 miles)

  • Lowest 1 December, 2025

    36 °F

  • Average December

    37 °F

  • Highest 1 December, 2025

    39 °F

Climate (2020–Present)

McKinney - McKinney National Airport (10.6 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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