The potential for severe weather on Beggar's Night led the Ohio Emergency Management Agency to issue an advisory for people to be prepared.
Heavy fog started to roll in Wednesday, reducing visibility to less than a half-mile, according to Storm Center 7 Meteorologist Jamie Simpson.
Trick-or-Treaters will likely have to contend with soggy weather as a cold front moves in.
During severe weather, stay informed of changes in the forecast and families should develop a plan in the event of loved ones getting separated, according to the state EMA release.
Other EMA tips include maintaining disaster supply kits (for examples visit visit www.ready.gov), which should contain enough supplies to sustain all household members for 72 hours.
Most communities have Beggar's Night festivities scheduled for 6 to 8 p.m. Thursday. Simpson said that could be the wettest time of the day.
"Later in the day rain will get steadier and perhaps heavier in spots," Simpson said. "Also winds will increase through the day with some gusts up to 30 mph possible by evening."
A line of rain with stronger winds and potentially some thunder will arrive at some point in the evening, but Simpson said there is a good chance this will hold off until trick-or-treating is over.
"Depending on how it plays out we may have some gusts to 50 mph, which will be capable of bringing down tree limbs, possibly some power outages," Simpson said.
After midnight, rain will start to taper down and should be gone by sunrise Friday. Temperatures Thursday will be in the mid-60s.
Most towns said trick-or-treating will take place as scheduled rain or shine. Click to see the updated list of Trick-or-Treat events.
Friday's weather will be drier, but still breezy, with a high near 60 degrees. Scattered showers return on Saturday afternoon when the high will be about 50 degrees. Sunday will be sunny but temperatures will start out in the mid-30s and climb to near 50 degrees.