In the West, a few rain and snow showers are developing from southern California to Arizona in conjunction with an approaching storm system. Cool, dry weather covers the remainder of the West.

On the Plains, winter wheat continues to ease into dormancy under a cool, dry weather regime. Some beneficial precipitation (drizzle and light rain) is developing in southern Texas.

In the Corn Belt, patches of light rain are developing in the Mississippi Valley. Mild, dry weather prevails elsewhere in the Midwest. In Ohio and neighboring areas, soggy fields continue to delay late-season corn harvest efforts, with many producers waiting for fields to freeze.

In the South, a chilly rain is disrupting late-autumn fieldwork activities from northern Florida into southern South Carolina. Cool, dry weather covers the remainder of the region.

Outlook: Above-normal temperatures will expand to encompass most areas from the Plains to the East Coast, with some of the most unusual warmth (high temperatures approaching 70°F) affecting the middle Mississippi Valley at mid-week. In contrast, cold air will remain entrenched across much of the West before reaching the Plains late in the week. Meanwhile, rain will end later today in the southern Atlantic region, but highelevation snow will fall through Tuesday in the Southwest. By mid-week, widespread precipitation—mostly rain—will develop across the nation’s mid-section, with 1- to 2-inch totals possible in the Corn Belt. The NWS 6- to 10-day outlook for December 17-21 calls for above-normal temperatures across the eastern one-third of the nation and parts of the north-central U.S., while colder-than-normal weather will prevail across the Intermountain West and from southern California to the southern High Plains. Meanwhile, drier-than-normal conditions across Florida’s peninsula and much of the West will contrast with near- to above-normal precipitation across the remainder of the U.S.