Halloween could turn into a washout across parts of the United States, and a new forecast identifies 12 states where rain and thunderstorms could disrupt trick-or-treating.

With October 31 just six days away, AccuWeather’s latest Halloween outlook highlights Colorado, Utah, Kansas, Nebraska, Iowa, Illinois, Missouri, western Kentucky, Arkansas, Tennessee, Mississippi, and Louisiana. But the biggest uncertainty isn’t whether storms develop. It’s whether they arrive during Halloween festivities.

That distinction could determine whether families need umbrellas, warmer costumes, or an entirely different plan.

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Halloween Storm Threat Spans 12 States

AccuWeather

AccuWeather senior meteorologist Alex Sosnowski reports that a slow-moving western storm system could push moisture eastward as the jet stream changes.

A map show showers and thunderstorms are expected to spread across the central United States Friday, October 30, into Saturday,…