Loy Lake Weather Forecast

    • 38
    • 59

    Increasing Clouds

    • 31
    • 41

    Slight Chance Rain

    • 36
    • 52

    Partly Sunny

    • 38
    • 60

    Partly Sunny

    • 29
    • 51

    Mostly Sunny

    • 35
    • 51

    Mostly Sunny

    • 43
    • 59

    Mostly Sunny

Today 3 Dec Grayson

Mostly sunny. Not as cool with Highs around 60. South Winds 5 to 10 Mph.

Tonight 3 Dec Grayson

Mostly cloudy. Lows in the upper 30s. Northeast Winds 5 to 10 Mph, increasing to 10 to 15 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Loy Lake Temperature Statistics

December Temperature

Sherman/Denison, Grayson County Airport (4.3 miles)

  • Lowest 1 December, 2025

    32.7 °F

  • Average December

    36.1 °F

  • Highest 1 December, 2025

    37.8 °F

Climate (2020–Present)

Sherman/Denison, Grayson County Airport (4.3 miles)

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  • Average Low 2020–2025

    55.4 °F

  • Average 2020–2025

    64.1 °F

  • Average High 2020–2025

    76.3 °F
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