Waterloo Park Weather Forecast

    • 77
    • 98

    Hot

    • 76
    • 99

    Hot

    • 76
    • 101

    Hot

    • 78
    • 101

    Hot

    • 78
    • 99

    Hot

    • 79
    • 96

    Partly Sunny

Today 22 Jul Grayson

Sunny. Highs in the upper 90s. South Winds around 10 Mph.

Tonight 22 Jul Grayson

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 70s. South Winds 5 to 10 Mph.

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  • Temperature Real-Time

Waterloo Park Temperature Statistics

July Temperature

Sherman/Denison, Grayson County Airport (5.6 miles)

  • Lowest 1 July, 2025

    69.8 °F

  • Average July

    79.8 °F

  • Highest 19 July, 2025

    96.8 °F

Climate (2020–Present)

Sherman/Denison, Grayson County Airport (5.6 miles)

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  • Average Low 2020–2025

    55.2 °F

  • Average 2020–2025

    63.8 °F

  • Average High 2020–2025

    76.1 °F
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