Grand Coteau Weather Forecast

    • 76
    • 95

    Becoming Sunny

    • 74
    • 96

    Mostly Sunny

    • 74
    • 97

    Hot

    • 76
    • 97

    Hot

    • 76
    • 97

    Hot

    • 76
    • 98

    Hot

Today 12 Aug St. Landry

Sunny. Patchy fog in the morning. A slight chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the mid 90s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 107.

Tonight 12 Aug St. Landry

Mostly clear in the Evening, then becoming partly cloudy. Patchy fog after midnight. Humid with Lows in the mid 70s. Southwest Winds 5 to 10 Mph.

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Grand Coteau Temperature Statistics

August Temperature

Opelousas St Landry Parish Airport (9.9 miles)

  • Lowest 9 August, 2026

    71.2 °F

  • Average August

    81.7 °F

  • Highest 1 August, 2026

    95.9 °F

Climate (2021–2026)

Opelousas St Landry Parish Airport (9.9 miles)

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  • Average Low 2021–2026

    58.5 °F

  • Average 2021–2026

    68 °F

  • Average High 2021–2026

    79 °F
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