Two skeleton figures with pumpkin heads, set against a blue sky.
Rain may dampen this year’s Halloween festivities in Stockton. (File photo by Chris Stone/Times of San Diego)

This year, Stockton’s trick-or-treaters might want to dress up like a firefighter, Mary Poppins or even Superman.

That’s because any costume that includes an umbrella, helmet or (waterproof) cape can pull double duty — not only offering dress-up fun for Halloween aficionados but also protection against inclement weather.

The National Weather Service is predicting a 70% chance of rain starting Wednesday night, with showers off and on through the weekend. About half an inch to 1 inch is expected to drip across Stockton, likely a welcome break after many months of heat. On Halloween, the chance of rain decreases to about 50% during the day and 40% during prime trick-or-treating hours.

“I think it wouldn’t hurt to bring umbrellas or a light raincoat,” meteorologist Kate Forrest of the National Weather Service’s Sacramento office said. “We are transitioning to a cooler period.”

Breezy winds out of the north are expected Tuesday, the weather service said, with the strongest winds anticipated along the I-5 corridor, where gusts up to 30 mph are possible. High temperatures will struggle to break 70 degrees across the Valley.

A second wave of rain is expected Friday night into Saturday, Forrest said. But the weather is expected to dry up next week, with temperatures likely a few degrees above normal.