A rainbow appears over the partially frozen American Falls in Niagara Falls, Ontario as temperatures dropped to 6 degrees on Tuesday. The National Weather Service issued a wind chill warning in Western New York from midnight Wednesday to Friday.

Visitors bundle up against the cold and wind as they view the falls.

Much of American Falls turned to snow-covered ice earlier this week in Ontario.

A family walks through the snow near the frozen Niagara Falls in Niagara Falls, New York.

Water flows to the edge of American Falls with Ontario buildings seen in the background.

Visitors view Niagara Falls in sub freezing temperatures.

Temperatures dropped to 6 degrees on Tuesday on the Ontario side of Niagara Falls.

With a wind chill warning in effect from Feb. 18-20, this week may not have been the best time to visit Niagara Falls.