Halloween Forecast 2026: What to Expect Across the U.S.

The Halloween forecast for Saturday, October 31, shows unsettled conditions across several parts of the U.S. More than 20 states could see rain, while some western mountain areas may receive snow. However, the Northeast is expected to offer better conditions for outdoor celebrations. Here’s the latest weather forecast for four regions!

Halloween forecast across parts of the US

Quick Takeaways: Halloween Forecast 2026

• Western US: Heavy rain, thunderstorms and mountain snow

• Central US: Scattered showers and unusually warm temperatures

• Southern US: Heavy rainfall and localized flash flooding

• Northeast & Mid-Atlantic: Cooler evening temperatures and occasional wind gusts

Western US

An approaching Pacific storm is expected to bring another round of wet weather to the Western U.S. on Halloween. 

Southern California faces the possibility of moderate to heavy rainfall, with Los Angeles and San Diego among the areas to watch.

San Diego could record measurable rain on Halloween for the first time in 39 years. Meanwhile, showers and thunderstorms are possible across Arizona, Utah, western Colorado and western New Mexico. 

Central Arizona, including Phoenix, also faces a Level 2 out of 4 flash flood risk.

Higher elevations across the Sierra Nevada and Intermountain West could receive snow. Cooler temperatures are also expected across the region, particularly after sunset.

Rain and mountain snow threaten Halloween plans across the West

Residents in Phoenix can use the GoWeatherRadar to check the latest precipitation radar and track approaching storms before making outdoor Halloween plans.

Central US

The Central U.S. will experience a combination of above-average temperatures and scattered rainfall. 

Moisture moving eastward from the Southern Plains could bring showers to parts of the region through Halloween.

Missouri, Illinois and Indiana are among the states where light showers are possible. 

Spotty rainfall could also affect Minneapolis, Milwaukee and Chicago, potentially interrupting some evening celebrations.

Despite the rain chances, temperatures will remain unusually warm across much of the Midwest and Ohio Valley. 

Highs could reach the 70s and lower 80s, running 10–20 degrees above seasonal averages. 

This warm pattern is expected to continue into early November, with no significant cooldown in sight.

Scattered showers could affect parts of the Midwest

Southern US

The Southern U.S. faces some of the most concerning rainfall conditions heading into Halloween. 

Tropical moisture interacting with an approaching weather system could trigger repeated showers and thunderstorms across parts of Texas and the Lower Mississippi Valley.

West Texas is a particular area of concern, where rainfall totals could reach 1–2 inches, with localized amounts approaching 3 inches. 

Rain may spread farther east into Louisiana, Mississippi and surrounding states.

Across southern Alabama and Georgia, rainfall totals of 2–3 inches are possible, with isolated amounts reaching 5 inches. 

A Level 1 out of 4 flash flood threat also covers Louisiana and extends into southern Mississippi and Georgia.

Heavy rainfall raises concerns about localized flooding

Northeast and Mid-Atlantic

Unlike much of the country, the Northeast and Mid-Atlantic are expected to enjoy relatively favorable weather on Halloween. 

High pressure will keep most areas dry, with no significant rain or snow expected during evening celebrations.

Daytime temperatures should reach the low-to-mid 60s, creating comfortable conditions for outdoor activities. 

However, temperatures may drop into the 40s after sunset, especially across New England. Winds are also expected to remain manageable for most communities.

The favorable conditions may not last long.

Another storm system is forecast to approach the region on Sunday, November 1, bringing rain and gustier winds. 

For Halloween night, however, most trick-or-treaters in the Northeast and Mid-Atlantic should be able to enjoy the festivities without major weather disruptions.

Reference

1. Weather365 Forecast

2. FOX Weather

3. Spectrum Local News