Grand Coteau Weather Forecast

    • 30
    • 48

    Mostly Sunny

    • 45
    • 58

    Mostly Cloudy

    • 55
    • 68

    Mostly Cloudy

    • 47
    • 77

    Chance Rain Showers

    • 49
    • 64

    Partly Sunny

    • 60
    • 75

    Mostly Cloudy

Today 15 Dec St. Landry

Widespread frost this morning. Sunny. Highs in the upper 40s. Northeast Winds 5 to 10 Mph.

Tonight 15 Dec St. Landry

Mostly clear in the Evening, then becoming partly cloudy. Widespread frost. Cold with Lows in the upper 20s. Light and variable Winds.

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Grand Coteau Temperature Statistics

December Temperature

Opelousas St Landry Parish Airport (9.9 miles)

  • Lowest 3 December, 2025

    30.4 °F

  • Average December

    49.1 °F

  • Highest 12 December, 2025

    76.5 °F

Climate (2020–Present)

Opelousas St Landry Parish Airport (9.9 miles)

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  • Average Low 2020–2025

    58 °F

  • Average 2020–2025

    67.6 °F

  • Average High 2020–2025

    78.7 °F
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