Lake Pontchartrain - Tchefuncta River Entrance Weather Forecast

    • 61
    • 73

    Mostly Cloudy

    • 50
    • 74

    Partly Sunny

    • 33
    • 60

    Chance Rain Showers

    • 30
    • 48

    Mostly Sunny

    • 36
    • 51

    Mostly Sunny

    • 41
    • 58

    Mostly Cloudy

Today 27 Dec Southwestern St. Tammany

Mostly cloudy in the Morning, then becoming mostly sunny. Areas of dense fog in the morning. Highs in the upper 70s. Southwest Winds 5 to 10 Mph.

Tonight 27 Dec Southwestern St. Tammany

Partly cloudy. Patchy fog after midnight. Lows around 60. South Winds around 5 Mph.

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Lake Pontchartrain - Tchefuncta River Entrance Temperature Statistics

December Temperature

Hammond, Hammond Municipal Airport (18 miles)

  • Lowest 15 December, 2025

    26.2 °F

  • Average December

    53.5 °F

  • Highest 21 December, 2025

    81.7 °F

Climate (2020–Present)

Hammond, Hammond Municipal Airport (18 miles)

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  • Average Low 2020–2025

    58.6 °F

  • Average 2020–2025

    68.1 °F

  • Average High 2020–2025

    78.9 °F
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