Lake Pontchartrain - Tchefuncta River Entrance Weather Forecast

    • 70
    • 90

    Slight Chance Thunderstorms

    • 71
    • 90

    Mostly Sunny

    • 72
    • 91

    Mostly Sunny

    • 72
    • 93

    Mostly Sunny

    • 72
    • 91

    Mostly Sunny

    • 72
    • 89

    Slight Chance Thunderstorms

Today 17 Sep Southwestern St. Tammany

Sunny. Highs around 90. Northwest Winds around 5 Mph, becoming southeast this afternoon.

Tonight 17 Sep Southwestern St. Tammany

Mostly clear. Lows in the upper 60s. Southeast Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Real-Time

Lake Pontchartrain - Tchefuncta River Entrance Temperature Statistics

September Temperature

Hammond, Hammond Municipal Airport (18 miles)

  • Lowest 9 September, 2025

    63.5 °F

  • Average September

    79 °F

  • Highest 13 September, 2025

    95.4 °F

Climate (2020–Present)

Hammond, Hammond Municipal Airport (18 miles)

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  • Average Low 2020–2025

    58.5 °F

  • Average 2020–2025

    67.9 °F

  • Average High 2020–2025

    78.7 °F
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