Meteorologist Alexandra Cranford has the cool New Orleans Weather forecast at 5:30 p.m. on Sunday, March 12, 2023. After three weeks of nearly continuous 80s, we've got cooler weather back! Expect partly cloudy skies on Monday. The afternoon will be cool in the 60s with a strong north breezy. Monday night temperatures will drop to near 40 north of the lake and 50 south of the lake. Tuesday looks cool again for the afternoon. A few stray showers will be possible Tuesday night as a weak disturbance moves through.