Dorchester Weather Forecast

    • 31
    • 54

    Mostly Sunny

    • 22
    • 45

    Partly Sunny

    • 30
    • 56

    Mostly Sunny

    • 24
    • 48

    Partly Sunny

    • 41
    • 50

    Partly Sunny

    • 43
    • 60

    Mostly Cloudy

Today 16 Jan Grayson

Sunny. Highs in the mid 50s. North Winds 10 to 20 Mph.

Tonight 16 Jan Grayson

Mostly clear. Cooler with Lows in the lower 30s. Northwest Winds 5 to 10 Mph.

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Dorchester Temperature Statistics

January Temperature

Sherman/Denison, Grayson County Airport (12.4 miles)

  • Lowest 12 January, 2026

    31.6 °F

  • Average January

    51.1 °F

  • Highest 7 January, 2026

    77 °F

Climate (2021–Present)

Sherman/Denison, Grayson County Airport (12.4 miles)

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  • Average Low 2021–2026

    55.5 °F

  • Average 2021–2026

    64.2 °F

  • Average High 2021–2026

    76.4 °F
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