Another Polar Plunge
During the evening and overnight hours rain coverage will increase across Southern Louisiana.
A surface low and cold front will likely bring some heavier pockets of rain into the morning hours of Wednesday. An additional 1-2" of rain will be possible through Wednesday as scattered showers may persist into the afternoon.
Behind the cold front, arctic-based air will be surging southward. Temperatures in the Upper Midwest are expected to be in the negative teens and 20s. Locally, morning temperatures will be near 50°. Thermometers will be steady early before falling through the 40s during the afternoon and evening as continued northerly winds tap into the very cold air to the north.
A freeze will be possible, especially for areas north of I-12, on Thursday Morning while sunshine returns in the afternoon with highs back into the 50s.