In the West, lingering showers are confined to parts of Washington and Oregon. Cool weather dominates the region, especially across the Northwest. Freeze warnings are in effect this morning in the northern Great Basin.

On the Plains, a chilly rain is falling across the central one-third of Montana, while strong thunderstorms are pounding south-central Texas in the vicinity of the Rio Grande. Elsewhere, cool, dry weather prevails, except for a return to above-normal temperatures on the central High Plains. Across the northern Plains, many fields remain too wet to resume summer crop planting operations.

In the Corn Belt, cool weather and wet fields are slowing a return to fieldwork in many areas. Frost was noted in parts of the Great Lakes region, particularly in northern sections of Michigan and Wisconsin.

In the South, mostly dry weather favors an acceleration of fieldwork, especially in areas—such as the Mississippi Delta—where there have been significant spring planting delays.

Outlook: A slow-moving storm system over New England will continue to produce cool, breezy, showery weather into the Memorial Day weekend. Additional precipitation totals of 1 to 2 inches can be expected in New England. Meanwhile, showers and thunderstorms will become more numerous during the weekend and early next week across the Plains and the western Corn Belt. Five-day rainfall totals could reach 1 to 3 inches, with locally higher amounts, in an area centered on eastern Nebraska and western Iowa. Some of the thunderstorms may be accompanied by large hail, high winds, and isolated tornadoes. At the same time, there will be an elevated risk of wildfires during the holiday weekend in the Southwest, where breezy, dry conditions will prevail. Elsewhere, weekend heat across the High Plains will spread eastward across the Midwest during the first half of next week. The NWS 6- to 10-day outlook for May 29 – June 2 calls for above-normal temperatures from the eastern Plains to the East Coast, while cooler-than-normal conditions will prevail in the West. Meanwhile, below-normal precipitation across the southern half of the U.S. will contrast with wetter-than-normal weather across the nation’s northern tier from the Pacific Northwest to the Great Lakes region.