Dorchester Weather Forecast

    • 77
    • 98

    Hot

    • 78
    • 98

    Hot

    • 78
    • 98

    Hot

    • 78
    • 98

    Hot

    • 78
    • 99

    Hot

    • 78
    • 99

    Hot

Today 9 Aug Grayson

Sunny, hot with Highs in the upper 90s. South Winds 5 to 10 Mph.

Tonight 9 Aug Grayson

Clear. Lows in the upper 70s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Dorchester Temperature Statistics

August Temperature

Sherman/Denison, Grayson County Airport (12.4 miles)

  • Lowest 3 August, 2026

    66.6 °F

  • Average August

    84.2 °F

  • Highest 4 August, 2026

    100.4 °F

Climate (2021–2026)

Sherman/Denison, Grayson County Airport (12.4 miles)

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  • Average Low 2021–2026

    55.9 °F

  • Average 2021–2026

    64.7 °F

  • Average High 2021–2026

    77.1 °F
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