Dorchester Weather Forecast

    • 71
    • 86

    Partly Sunny

    • 73
    • 87

    Chance Thunderstorms

    • 72
    • 86

    Chance Thunderstorms

    • 66
    • 85

    Rain Showers Likely

    • 64
    • 77

    Rain Showers Likely

    • 62
    • 75

    Chance Thunderstorms

Today 16 May Grayson

Sunny. Highs in the upper 80s. South Winds 15 to 20 Mph.

Tonight 16 May Grayson

Mostly clear in the Evening, then becoming mostly cloudy. Lows in the lower 70s. South Winds 10 to 15 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Dorchester Temperature Statistics

May Temperature

Sherman/Denison, Grayson County Airport (12.4 miles)

  • Lowest 2 May, 2026

    44.6 °F

  • Average May

    65.3 °F

  • Highest 14 May, 2026

    87.8 °F

Climate (2021–Present)

Sherman/Denison, Grayson County Airport (12.4 miles)

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

  • Average Low 2021–2026

    55.8 °F

  • Average 2021–2026

    64.6 °F

  • Average High 2021–2026

    76.9 °F
Get WillyWeather+ to remove ads