In the West, the latest Pacific storm is producing another round of cool, showery weather in northern California and the Northwest, where crop development has lagged in recent weeks. In contrast, very warm weather is expanding across southern California and the Southwest.

On the Plains, cool weather in Montana and the Dakotas contrasts with intensifying heat farther south. On the southern Plains, hot, dry weather is promoting winter wheat harvesting but increasing stress on pastures and summer crops, such as silking corn.

In the Corn Belt, showers and thunderstorms are easing concerns about developing dryness in the upper Mississippi Valley. Elsewhere, abundant moisture reserves exist for Midwestern corn and soybean development.

In the South, a weak low-pressure system near the Texas-Louisiana border is producing beneficial showers in drought-affected areas from eastern Texas into the lower Mississippi Valley.

Outlook: Building heat across the South will be most intense from the Desert Southwest to the southern High Plains. Weekend temperatures will exceed 110 degrees F in the Desert Southwest and will range from 100 to 110 degrees F on the southern High Plains. Readings above 95 degrees F will occur as far east as the Mississippi Delta. Meanwhile, a series of disturbances will maintain showery weather and near- to below normal temperatures across the northern half of the U.S., including the Midwest. Rain will also fall along and near the Gulf Coast. The NWS 6- to 10-day outlook for June 9-13 calls for below-normal temperatures in New England and the Northwest, while hotter-than-normal weather will prevail across most of the southern half of the U.S. Meanwhile, below-normal precipitation in the southern Rockies will contrast with wetter-than-normal conditions in southern portions of Texas and Florida as well as a broad area stretching from the Northwest into the Midwestern and Mid-Atlantic States.