Tatum Lake Weather Forecast

    • 77
    • 98

    Hot

    • 77
    • 99

    Hot

    • 78
    • 98

    Hot

    • 78
    • 98

    Hot

    • 78
    • 99

    Hot

    • 74
    • 97

    Hot

    • 74
    • 95

    Mostly Sunny

Today 27 Jul Collin

Sunny, hot with Highs around 101. South Winds 5 to 10 Mph. Heat index Values up to 109.

Tonight 27 Jul Collin

Mostly clear. Lows in the upper 70s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Tatum Lake Temperature Statistics

July Temperature

McKinney - McKinney National Airport (13.7 miles)

  • Lowest 5 July, 2026

    71.7 °F

  • Average July

    85.7 °F

  • Highest 21 July, 2026

    102.7 °F

Climate (2021–2026)

McKinney - McKinney National Airport (13.7 miles)

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  • Average Low 2021–2026

    56.5 °F

  • Average 2021–2026

    67.4 °F

  • Average High 2021–2026

    78.4 °F
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