The remnants of Nicholas will meander over the central Gulf Coast region during the next couple of days, delivering additional rainfall (3–6+ inches) from southeastern Louisiana into western Florida. Farther east, a low-pressure system north of the Bahamas will approach the middle Atlantic Coast and may soon become a tropical cyclone. Regardless of development, most of the significant tropical impacts should remain offshore. Elsewhere, a pattern change in the Pacific Northwest will result in cooler weather and widespread showers, starting on Friday. During the weekend, cool, showery weather will spread eastward across the nation’s northern tier—reaching northern sections of the Rockies and High Plains—and southward into northern California. However, generally dry weather will persist from central and southern California to the central and southern High Plains.

The National Weather Service Climate Prediction Center's 6–10 day outlook for September 21–25 calls for the likelihood of below-normal temperatures from the Great Basin to northern sections of the Rockies and High Plains, while warmer-than-normal weather will prevail along and east of a line from southeastern Arizona to Minnesota.

Meanwhile, below-normal precipitation across much of the western half of the U.S. should contrast with wetter-than-normal conditions in the Pacific Northwest and from the Mississippi Valley eastward, excluding the northern Atlantic States.