Dorchester Weather Forecast

    • 65
    • 83

    Thunderstorms Likely

    • 65
    • 80

    Rain Showers Likely

    • 64
    • 80

    Chance Thunderstorms

    • 67
    • 81

    Chance Thunderstorms

    • 67
    • 79

    Rain Showers Likely

Today 23 May Grayson

Mostly cloudy. Highs in the lower 80s. North Winds around 5 Mph.

Tonight 23 May Grayson

Mostly cloudy. Lows in the mid 60s. Northeast Winds around 5 Mph.

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  • 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

    68.2 °F

  • Highest 14 May, 2026

    87.8 °F

Climate (2021–Present)

Sherman/Denison, Grayson County Airport (12.4 miles)

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  • Average Low 2021–2026

    55.8 °F

  • Average 2021–2026

    64.6 °F

  • Average High 2021–2026

    77 °F
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