Westminster Weather Forecast

    • 77
    • 99

    Hot

    • 77
    • 99

    Hot

    • 76
    • 98

    Hot

    • 74
    • 97

    Hot

    • 72
    • 97

    Hot

    • 73
    • 96

    Mostly Sunny

Today 14 Sep Collin

Sunny, hot with Highs around 100. South Winds 5 to 10 Mph. Heat index Values up to 105.

Tonight 14 Sep Collin

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

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Westminster Temperature Statistics

September Temperature

McKinney - McKinney National Airport (14.3 miles)

  • Lowest 11 September, 2026

    75 °F

  • Average September

    87.4 °F

  • Highest 1 September, 2026

    100.7 °F

Climate (2021–2026)

McKinney - McKinney National Airport (14.3 miles)

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  • Average Low 2021–2026

    56.6 °F

  • Average 2021–2026

    67.5 °F

  • Average High 2021–2026

    78.6 °F
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