Southwest Houston Weather Forecast

    • 54
    • 75

    Mostly Sunny

    • 58
    • 82

    Mostly Sunny

    • 62
    • 85

    Mostly Sunny

    • 64
    • 87

    Mostly Sunny

    • 62
    • 87

    Sunny

    • 63
    • 88

    Mostly Sunny

    • 62
    • 86

    Mostly Sunny

Today 18 Mar Fort Bend

Sunny and not as cool. Near steady temperature in the lower 70s. South Winds 5 to 10 Mph.

Tonight 18 Mar Fort Bend

Mostly clear. Lows in the lower 50s. South Winds 5 to 10 Mph.

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Southwest Houston Temperature Statistics

March Temperature

Houston Southwest Airport (9.9 miles)

  • Lowest 13 March, 2026

    39.9 °F

  • Average March

    70.3 °F

  • Highest 6 March, 2026

    85.8 °F

Climate (2021–Present)

Houston Southwest Airport (9.9 miles)

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  • Average Low 2021–2026

    61.6 °F

  • Average 2021–2026

    71.2 °F

  • Average High 2021–2026

    81.6 °F
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