The warm stretch in the last week of year solidified 2021’s spot as the warmest December on record. December 28^th, 29^th, 30^th and 31^st all set records for the warmest high temperature with all four days 80° or warmer. The 29^th, 30^th and 31^st also set record for the warmest low temperatures with temperatures never dropping below 69°.

The records for the month are determined by average temperature. The average temperature for the month of December in Baton Rouge is typically around 54°. In 2021, the average temperature for December was 63.9°, about 10 degrees above normal. This shattered the previous record set in 1971 with an average December temperature of 62.7°.