Waterloo Lake Weather Forecast

    • 43
    • 54

    Increasing Clouds

    • 41
    • 54

    Chance Rain Showers

    • 31
    • 51

    Mostly Sunny

    • 36
    • 47

    Chance Rain Showers

    • 43
    • 54

    Mostly Cloudy

    • 49
    • 62

    Partly Sunny

Today 3 Dec Grayson

Sunny. Highs in the mid 50s. East Winds around 5 Mph, becoming southeast this afternoon.

Tonight 3 Dec Grayson

Mostly clear in the Evening, then mostly cloudy with a 20 percent chance of Showers after midnight. Not as cool with Lows in the lower 40s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Waterloo Lake Temperature Statistics

December Temperature

Sherman/Denison, Grayson County Airport (5.6 miles)

  • Lowest 1 December, 2024

    35.6 °F

  • Average December

    43.4 °F

  • Highest 1 December, 2024

    60.8 °F

Climate (2019–Present)

Sherman/Denison, Grayson County Airport (5.6 miles)

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  • Average Low 2019–2024

    55.2 °F

  • Average 2019–2024

    63.8 °F

  • Average High 2019–2024

    76.1 °F
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