Big Lake Weather Forecast

    • 69
    • 97

    Hot

    • 68
    • 95

    Partly Sunny

    • 63
    • 91

    Mostly Sunny

    • 62
    • 89

    Partly Sunny

    • 64
    • 91

    Partly Sunny

    • 65
    • 93

    Mostly Cloudy

Today 21 Sep Union

Mostly cloudy in the Morning, then becoming partly cloudy. A slight chance of Showers. A slight chance of Thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20 percent.

Tonight 21 Sep Union

Mostly clear. A slight chance of Showers and Thunderstorms this evening. Lows around 70. North 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 18 September, 2026

    66.7 °F

  • Average September

    84.1 °F

  • Highest 13 September, 2026

    100.9 °F

Climate (2022–2026)

Bastrop, Morehouse Memorial Airport (17.4 miles)

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  • Average Low 2022–2026

    56.3 °F

  • Average 2022–2026

    66.1 °F

  • Average High 2022–2026

    77.3 °F
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