Winter weather is arriving across seven U.S. states Monday, October 26 , as falling temperatures bring snow to the Rockies and northern Plains while a separate storm threatens Alaska with up to 16 inches of accumulation and wind gusts reaching 55 mph.

The biggest concern is Alaska, where National Weather Service warnings extend into Monday night. Farther south, Colorado, Wyoming, Montana, Nebraska, South Dakota, and North Dakota face varying chances of early-season snow, including a potentially messy Monday around the Black Hills.

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Where Monday’s Snow Could Disrupt Travel

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The NOAA Weather Prediction Center identifies the Black Hills and portions of northwestern South Dakota and south-central North Dakota as areas where snow could accumulate Monday.

The timing matters. Temperatures remain marginal for accumulation, meaning snow falling during warmer daylight hours may struggle to stick.…