Richardson Weather Forecast

    • 75
    • 96

    Partly Sunny

    • 71
    • 95

    Partly Sunny

    • 73
    • 93

    Partly Sunny

    • 76
    • 96

    Partly Sunny

    • 77
    • 97

    Hot

    • 76
    • 95

    Chance Rain Showers

Today 23 Sep Dallas

Mostly sunny. Highs in the upper 90s. East Winds 5 to 10 Mph.

Tonight 23 Sep Dallas

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the mid 70s. East Winds 5 to 10 Mph.

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Richardson Temperature Statistics

September Temperature

Dallas / Addison Airport (5.6 miles)

  • Lowest 4 September, 2026

    78.8 °F

  • Average September

    88 °F

  • Highest 1 September, 2026

    100.4 °F

Climate (2021–2026)

Dallas / Addison Airport (5.6 miles)

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  • Average Low 2021–2026

    60.4 °F

  • Average 2021–2026

    68.2 °F

  • Average High 2021–2026

    78.9 °F
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