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 »
  December has the shortest days of the year in New Orleans with an average of 10h and 18min of daylight. February and December, with an average relative humidity of 77%, are most humid months in New Orleans, Louisiana.
• 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 in December, during 13.4 rainfall days, 3.35" (85mm) of precipitation is typically accumulated.
• Shreveport - December »
  December in Shreveport sees the return of winter, marked by the lowest temperatures and the highest relative humidity observed throughout the year. With an average of 10h and 6min of daylight, December has the shortest days of the year in Shreveport, Louisiana.
• Lafayette - December »
  The month with the shortest days in Lafayette is December, with an average of 10h and 12min of daylight. In December, in Lafayette, Louisiana, the rain falls for 10.2 days.
• Lake Charles - December »
  The month with the shortest days in Lake Charles, Louisiana, is December, with an average of 10h and 12min of daylight. The month with the least sunshine in Lake Charles is December, with an average of 5.1h of sunshine.
• Kenner - December »
  The month with the least sunshine in Kenner is December, with an average of 5.1h of sunshine. In Kenner during December, the rain falls for 14.7 days and regularly aggregates up to 3.7" (94mm) of precipitation.
• Bossier City - December »
  The months with the lowest UV index in Bossier City are January and December, with an average maximum UV index of 3. January and December, with an average maximum UV index of 3, are months with the lowest UV index in Bossier City, Louisiana.
• Monroe - December »
  The month with the shortest days in Monroe is December, with an average of 10h and 6min of daylight. In Monroe, in December, during 13.4 rainfall days, 3.46" (88mm) of precipitation is typically accumulated.
• Alexandria - December »
  The month with the shortest days in Alexandria is December, with an average of 10h and 12min of daylight. In Alexandria, Louisiana, in December, during 13.4 rainfall days, 3.31" (84mm) of precipitation is typically accumulated.
• Houma - December »
  In Houma, Louisiana, in December, it is raining for 9.4 days, with typically 1.5" (38mm) of accumulated precipitation. August and December, with an average relative humidity of 78%, are most humid months in Houma.
• New Iberia - December »
  With an average of 10h and 18min of daylight, December has the shortest days of the year in New Iberia, Louisiana. In New Iberia, during December, the rain falls for 9.9 days and regularly aggregates up to 1.1" (28mm) of precipitation.
• Slidell - December »
  December is the most humid month in Slidell with an average relative humidity of 79%. December is the month with the lowest UV index in Slidell, Louisiana, with an average maximum UV index of 3.