In the West, cool weather in California and the Northwest contrasts with lingering heat in the Southwest. Scattered rain and high-elevation snow showers accompany the Northwestern cool spell.

On the Plains, beneficial rain is ending across Montana and the Dakotas, where cool, breezy weather prevails. Across the southern half of the Plains, warm, dry weather is maintaining concerns about the deteriorating conditions of summer crops and immature winter wheat

In the Corn Belt, showers and thunderstorms across the upper Midwest are slowing soybean planting but providing highly beneficial moisture for summer crops. Meanwhile, warm, dry air is expanding across the central and eastern Corn Belt, where pockets of unfavorable dryness exist.

In the South, showers continue to ease or eradicate drought in the southern Mid-Atlantic States. In contrast, worsening drought is adversely affecting pastures and summer crops in the Mid-South, including the northern Mississippi Delta.

Outlook: Daily showers and thunderstorms will linger through week’s end in parts of the East, particularly across the Mid-Atlantic States. Meanwhile, a series of disturbances will maintain cool conditions and periods of rain from the Pacific Northwest into the upper Midwest. Five-day rainfall totals could reach 2 to 4 inches in the upper Midwest and 1 to 2 inches on the northern Plains. In contrast, mostly dry weather will prevail into early next week across the southern half of the U.S., excluding the Atlantic Coast States. Late in the week and into the weekend, heat will build across the South, East, and Midwest, with many locations expecting several days of 90-degree heat. The NWS 6- to 10-day outlook for May 28 – June 1 calls for near- to above-normal temperatures nationwide, except for cooler-than-normal conditions from the Pacific Northwest to the upper Midwest. Meanwhile, below-normal rainfall from the Pacific Coast to the southern Plains will contrast with wetter-than-normal weather from the northern Plains to the Atlantic Coast States.