Weather Underground Forecast for Sunday, Oct. 27, 2013.
A cold frontal boundary will move across the Pacific Northwest on Sunday, while a separate cold front will stretch from the southern Plans to the Northeast.
The Pacific Northwest, including Washington, Oregon and northern California will experience a significant change in temperatures on Sunday as a cold front moves over the region. Temperatures will likely drop 10 to 15 degrees throughout the area, while light to moderate rain will accompany the front. High elevation snow will be possible in the Cascades and northern Sierra Nevadas as a result of this frontal passage. Meanwhile, the Southwest will stay clear of this cold front and will avoid precipitation on Sunday.
A much stronger cold front will move into the Intermountain West, northern Plains and upper Midwest on Sunday, as several states can expect moderate to heavy snow showers. Montana, Idaho, Wyoming and northeast Utah will feel the bulk of this system, as winter storm warnings will likely be issued. The four corners states will avoid wet weather as high pressure builds over the region.
A separate cold front will stretch from Texas to New England on Sunday, bringing rain and thunderstorms to handful of states. Stormy weather will impact Texas, Louisiana, Arkansas, Mississippi, Alabama and Tennessee, while the central and eastern Gulf Coast will stay clear of wet weather. Rain will also be possible along the Great Lakes and into the Northeast.
Temperatures in the Lower 48 states Saturday have ranged from a morning low of 10 degrees at Mt. Washington, N.H. to a high of 98 degrees at Hollywood, Fla.