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“We try not to say that word around here,” joked Candy Carlson, a spokesperson for the Pasadena Tournament of Roses, the organization behind the 137th Rose Parade, which precedes the Rose Bowl college football playoff game.

It has rained only 10 times in the parade's history, she said, and not since 2006.

In New York City, forecasters are predicting temperatures in the low 30s, which is not unusual, when the on New Year’s Eve. Light rain is possible in Las Vegas, where several casinos will be shooting fireworks from rooftops.

At the Rose Parade, rare wet weather is unlikely to keep floats, marching bands, entertainers and others from participating. Carlson said people riding on floats will have rain gear if necessary, and tow trucks will be standing by in case of mechanical problems.

Spectators will need to prepare, too. Umbrellas are not allowed in parade seating areas that require tickets, though the ban doesn't cover people who simply line up along the nearly 6-mile (9.6 kilometer) route. Curbside camping — no tents — begins at noon Wednesday. Rain also is predicted that day.

“Last year's parade theme was ‘Best Day Ever!’ and six days later it was the worst," said Lisa Derderian, spokesperson for the city of Pasadena, referring to the devastating in Los Angeles County. “We want to start the new year on a high note. Hopefully Mother Nature cooperates with the weather.”