Big Lake Weather Forecast

    • 67
    • 94

    Slight Chance Thunderstorms

    • 66
    • 93

    Chance Thunderstorms

    • 68
    • 94

    Partly Sunny

    • 68
    • 93

    Partly Sunny

    • 67
    • 92

    Chance Rain Showers

    • 66
    • 87

    Chance Thunderstorms

Today 18 Sep Union

Partly cloudy. A slight chance of Showers and Thunderstorms in the afternoon. Highs in the lower 90s. Light and variable Winds, becoming south around 5 Mph in the afternoon. Chance of rain 20 percent.

Tonight 18 Sep Union

Patchy fog through the day. Mostly clear with a slight chance of Showers and Thunderstorms. Highs in the lower 90s. Lows in the upper 60s. Southwest Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Lake Temperature Statistics

September Temperature

Bastrop, Morehouse Memorial Airport (17.4 miles)

  • Lowest 9 September, 2025

    55.9 °F

  • Average September

    76.1 °F

  • Highest 13 September, 2025

    97.2 °F

Climate (2020–Present)

Bastrop, Morehouse Memorial Airport (17.4 miles)

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  • Average Low 2020–2025

    54.7 °F

  • Average 2020–2025

    64.4 °F

  • Average High 2020–2025

    75.4 °F
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