It's that time of year again when more than a million green-clad revelers fill the streets of America’s most Irish big city for the South Boston St. Patrick’s Day parade, celebrating the heritage and contributions of all those who hail from the Emerald Isle.

With St. Patrick’s Day celebrations picking up around the United States, here is what you need to know about this year’s Boston St. Patrick’s Day parade.

Gusty winds are expected to hit Boston during the annual St. Patrick's Day parade​ on Sunday before a storm brings heavy downpours to the state on Monday.