Dorchester Weather Forecast

    • 46
    • 60

    Becoming Sunny

    • 53
    • 74

    Mostly Sunny

    • 56
    • 84

    Sunny

    • 59
    • 87

    Sunny

    • 64
    • 90

    Sunny

    • 58
    • 91

    Sunny

    • 54
    • 79

    Partly Sunny

Today 17 Mar Grayson

Mostly sunny. Not as cool with Highs in the lower 60s. South Winds 10 to 15 Mph.

Tonight 17 Mar Grayson

Mostly clear this Evening, then becoming partly cloudy. Not as cool with Lows in the mid 40s. South Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Dorchester Temperature Statistics

March Temperature

Sherman/Denison, Grayson County Airport (12.4 miles)

  • Lowest 8 March, 2026

    37.4 °F

  • Average March

    63 °F

  • Highest 3 March, 2026

    82.4 °F

Climate (2021–Present)

Sherman/Denison, Grayson County Airport (12.4 miles)

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  • Average Low 2021–2026

    55.6 °F

  • Average 2021–2026

    64.4 °F

  • Average High 2021–2026

    76.7 °F
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