Grayson County Airport Weather Forecast

    • 48
    • 71

    Mostly Sunny

    • 54
    • 72

    Partly Sunny

    • 58
    • 66

    Chance Rain Showers

    • 64
    • 74

    Mostly Cloudy

    • 66
    • 79

    Chance Thunderstorms

    • 56
    • 81

    Slight Chance Thunderstorms

Today 19 Apr Grayson

Sunny. Highs in the lower 70s. Southeast Winds around 5 Mph.

Tonight 19 Apr Grayson

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 40s. Southeast Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Grayson County Airport Temperature Statistics

April Temperature

Sherman/Denison, Grayson County Airport (0 miles)

  • Lowest 5 April, 2026

    42.6 °F

  • Average April

    67.4 °F

  • Highest 13 April, 2026

    84.2 °F

Climate (2021–Present)

Sherman/Denison, Grayson County Airport (0 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    55.8 °F

  • Average 2021–2026

    64.5 °F

  • Average High 2021–2026

    76.9 °F
Get WillyWeather+ to remove ads