Halloween is on Friday, and the latest weather forecast calls for the rain to move out before trick-or-treating begins in Massachusetts. But when is the right time for kids to put on their costumes and crisscross the neighborhood for candy ?

Many cities and towns do not set official trick-or-treat times. "The hours are under the discretion of the parents to decide," the city of Waltham said in a Facebook post.

But dozens of communities in the state do share recommended hours for trick-or-treating.

Worcester, Boston trick-or-treat hours

The city of Worcester recommends trick-or-treating between 5 p.m. and 8 p.m. The city's police department also shared some common-sense safety tips for candy collectors, like wearing brightly colored costumes that are more visible to drivers an

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