Clear Lake Weather Forecast

    • 46
    • 66

    Mostly Cloudy

    • 41
    • 69

    Becoming Sunny

    • 49
    • 68

    Partly Sunny

    • 51
    • 68

    Rain Showers Likely

    • 53
    • 75

    Partly Sunny

    • 55
    • 74

    Chance Rain Showers

    • 48
    • 72

    Mostly Cloudy

Today 20 Sep Pierce

Partly sunny with a 30 percent chance of Showers. Highs in the mid 60s.

Tonight 20 Sep Pierce

Mostly cloudy. Lows in the mid 40s. East Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Clear Lake Temperature Statistics

September Temperature

Harvey Municipal Airport (9.3 miles)

  • Lowest 13 September, 2026

    35.6 °F

  • Average September

    62.2 °F

  • Highest 4 September, 2026

    84.2 °F

Climate (2021–2026)

Harvey Municipal Airport (9.3 miles)

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  • Average Low 2021–2026

    30.4 °F

  • Average 2021–2026

    41.2 °F

  • Average High 2021–2026

    51.8 °F
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