La Mesa Weather Forecast

    • 79
    • 93

    Chance Thunderstorms

    • 77
    • 93

    Mostly Sunny

    • 78
    • 94

    Mostly Sunny

    • 79
    • 95

    Mostly Sunny

    • 79
    • 95

    Slight Chance Thunderstorms

    • 80
    • 96

    Slight Chance Thunderstorms

Today 17 Sep Coastal Harris

Partly sunny with a chance of Showers and Thunderstorms. Humid with Highs in the lower 90s. East Winds 10 to 15 Mph. Chance of rain 50 percent.

Tonight 17 Sep Coastal Harris

Partly cloudy with a chance of Showers in the Evening, then mostly clear after midnight. Humid with Lows in the upper 70s. East Winds 5 to 10 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

La Mesa Temperature Statistics

September Temperature

Houston / Ellington (5 miles)

  • Lowest 10 September, 2026

    77 °F

  • Average September

    84.3 °F

  • Highest 7 September, 2026

    95 °F

Climate (2021–2026)

Houston / Ellington (5 miles)

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  • Average Low 2021–2026

    64.4 °F

  • Average 2021–2026

    72 °F

  • Average High 2021–2026

    80.5 °F
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