December weather forecast
Louisiana, USA

December marks the beginning of winter in Louisiana, with temperatures continuing their downward trajectory, particularly as the month progresses. In the southern parts, encompassing areas such as Lake Charles, daytime highs are generally found between 60°F (15.6°C) and 64°F (17.8°C). The northern regions, where cities like Shreveport reside, typically experience temperatures that range from 55°F (12.8°C) to 59°F (15°C).

Nights in December can be quite chilly. In the southern zones of Louisiana, nighttime temperatures hover between 42°F (5.6°C) and 46°F (7.8°C). In the northern regions, they can dip even further, often ranging from 37°F (2.8°C) to 41°F (5°C).

Rainfall tends to increase slightly in December. While the state does not experience prolonged periods of rain, short and scattered rain events are relatively common. December also presents the possibility of experiencing frost, especially in the northern parts of Louisiana. These frosty conditions can occur during particularly cold nights, and while snow remains rare, there is always a chance for some flurries, especially in the northernmost areas.

In comparison to November, December experiences a marked decrease in temperatures, and the cooler conditions begin to take hold across the state. Days become even shorter, and the distinct chill in the atmosphere, especially during the early mornings and late evenings, is indicative of the winter season in full swing. While the colder conditions become more pronounced, Louisiana's winters remain milder than many northern states. Thus, the state offers a relatively moderate winter experience, with the occasional cold snap interspersed with mild and sunny days. As the month progresses, the likelihood of seeing some frost or even a light snow event increases, particularly in the northern areas. However, the state's coastal proximity ensures that any such events are generally short-lived.

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• New Orleans - December »
  In New Orleans during December, the rain falls for 7.8 days and regularly aggregates up to 0.79" (20mm) of precipitation. December has the least sunshine of the year in New Orleans with an average of 5.1h of sunshine.
• Baton Rouge - December »
  The month with the shortest days in Baton Rouge is December, with an average of 10h and 12min of daylight. In Baton Rouge, during December, the rain falls for 13.4 days and regularly aggregates up to 3.35" (85mm) of precipitation.
• Shreveport - December »
  December in Shreveport sees the return of winter, marked by the lowest temperatures and the highest relative humidity observed throughout the year. December has the shortest days of the year in Shreveport, with an average of 10h and 6min of daylight.
• Lafayette - December »
  With an average of 10h and 12min of daylight, December has the shortest days of the year in Lafayette, Louisiana. In Lafayette in December, during 10.2 rainfall days, 1.1" (28mm) of precipitation is typically accumulated.
• Lake Charles - December »
  In Lake Charles in December, it is raining for 13.8 days, with typically 3.31" (84mm) of accumulated precipitation. The month with the lowest UV index in Lake Charles is December, with an average maximum UV index of 3.
• Kenner - December »
  The month with the shortest days in Kenner is December, with an average of 10h and 18min of daylight. December is the most humid month in Kenner with an average relative humidity of 78%.
• Bossier City - December »
  With an average of 10h and 6min of daylight, December has the shortest days of the year in Bossier City, Louisiana. In Bossier City in December, during 6.9 rainfall days, 0.91" (23mm) of precipitation is typically accumulated.
• Monroe - December »
  With an average of 10h and 6min of daylight, December has the shortest days of the year in Monroe. In December, in Monroe, the rain falls for 13.4 days.
• Alexandria - December »
  With an average of 10h and 12min of daylight, December has the shortest days of the year in Alexandria, Louisiana. In Alexandria, during December, the rain falls for 13.4 days and regularly aggregates up to 3.31" (84mm) of precipitation.
• Houma - December »
  The month with the least sunshine in Houma is December, with an average of 5.4h of sunshine. August and December, with an average relative humidity of 78%, are the most humid months in Houma, Louisiana.
• New Iberia - December »
  In New Iberia, Louisiana, in December, it is raining for 9.9 days, with typically 1.1" (28mm) of accumulated precipitation. With the onset of December, New Iberia experiences a modest temperature adjustment, with the average high-temperature gently receding from an agreeable 68.9°F (20.5°C) in November to a refreshing 62.2°F (16.8°C).
• Slidell - December »
  With an average relative humidity of 79%, December is the most humid month in Slidell, Louisiana. December has the shortest days of the year in Slidell, Louisiana, with an average of 10h and 12min of daylight.