Dorchester Weather Forecast

    • 56
    • 70

    Chance Thunderstorms

    • 66
    • 77

    Chance Thunderstorms

    • 61
    • 76

    Rain Showers

    • 45
    • 71

    Rain Showers Likely

    • 49
    • 65

    Slight Chance Rain Showers

    • 55
    • 74

    Sunny

Today 8 Mar Grayson

Sunny. Not as cool with Highs around 70. North Winds around 5 Mph in the Morning, becoming light and variable.

Tonight 8 Mar Grayson

Partly cloudy. A 20 percent chance of Showers and Thunderstorms after midnight. Not as cool with Lows in the mid 50s. South Winds around 5 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 2 March, 2026

    47.1 °F

  • Average March

    66.7 °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

    55.7 °F

  • Average 2021–2026

    64.4 °F

  • Average High 2021–2026

    76.7 °F
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