Nature has a frigid welcome for bikers descending on Port Dover for traditional Friday the 13th festivities.

Forecasters say wind chills of -30 C to -35 are expected to persist into Friday morning.

Provincial police are asking motorists to be extra vigilant due to the possibility of increased motorcycle traffic in the Port Dover area.

And, police say those attending the Friday the 13th rally should plan ahead if they expect to consume "intoxicating substances."