Annual Krewe of Salacia Parade Saturday February 10, Immediately following the Krewe of Neptune through downtown Biloxi, beginning on Main and ending on Caillavet St. Mystic Krewe of the Seahorse Mardi Gras Parade Monday Lundi Gras February 12, 5pm Begins at Bookter St, Bay St. LouisAnd that all important forecast…soggy:Today: Mostly cloudy. Chance of rain showers in the morning, then isolated rain showers in the afternoon. Highs in the upper 60s. Southeast winds 5 to 10 mph.