Lake Pontchartrain - Tchefuncta River Entrance Weather Forecast

    • 57
    • 62

    Rain Showers Likely

    • 45
    • 69

    Rain Showers Likely

    • 44
    • 59

    Mostly Sunny

    • 57
    • 68

    Partly Sunny

    • 58
    • 71

    Partly Sunny

    • 58
    • 69

    Partly Sunny

Today 17 Dec Southwestern St. Tammany

Mostly cloudy with a 20 percent chance of Showers. Highs in the mid 60s. East Winds 5 to 10 Mph.

Tonight 17 Dec Southwestern St. Tammany

Cloudy. Patchy fog in the evening. A slight chance of Showers in the Evening, then a chance of Showers and Thunderstorms after midnight. Not as cool. Near steady temperature in the upper 50s. East Winds around 5 Mph. Chance of rain 50 percent.

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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

    49.6 °F

  • Highest 13 December, 2025

    77.9 °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 °F

  • Average High 2020–2025

    78.9 °F
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