5-day rainfall forecast
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Across the Corn Belt, lingering heat in the lower Great Lakes region contrasts with near- or below-normal temperatures across the remainder of the Midwest. Showers and thunderstorms are occurring in several areas, with the heaviest rain falling early Monday in eastern Iowa and northwestern Illinois. Pockets of short-term dryness have developed in several areas of the Midwest, but most corn and soybeans have adequate soil moisture to support normal development.

On the Plains, cooler conditions and scattered showers and thunderstorms continue to provide relief from last week’s spell of hot weather. Weekend rainfall was heaviest across portions of the central and southern Plains, resulting in some delays in winter wheat harvesting and other fieldwork. However, previously stressed rangeland, pastures, and rain-fed summer crops have generally benefited from the recent boost in soil moisture.

In the South, showers and thunderstorms are primarily occurring from the Mississippi Delta westward. Meanwhile, hot, humid weather in the Atlantic Coast States is promoting a rapid crop development pace.

In the West, a Heat Advisory is in effect across California’s Central Valley for the remainder of the week. Monday’s high temperatures will approach 110° in the northern Sacramento Valley of California. Above-normal temperatures also cover the remainder of the region, except for some lingering cool weather in the central Rockies and environs. The region’s largest wildfire—the Bush Fire—has scorched nearly 185,000 acres of vegetation northeast of Mesa, Arizona, and is 42% contained.

During the next 5 days, hot, dry weather will dominate areas west of the Rockies. Late in the week, however, cooler air will begin to overspread the Intermountain West. Meanwhile, scattered to widespread showers and thunderstorms will occur across the central and eastern U.S. Some of the heaviest rain, locally 1 to 3 inches or more, should fall in the western and central Gulf Coast States. Parts of the Midwest may receive 1 to 2 inches. Elsewhere, unusually hot weather in New England will persist for much of the week, while below-normal temperatures in other areas east of the Rockies will mostly rebound to near-normal levels.

Looking ahead, the 6- to 10-day outlook calls for the likelihood of near- or above-normal temperatures and rainfall across most of the country. Cooler-than-normal conditions will be confined to the northern High Plains and the Northwest, while drier-than-normal weather should be limited to the Atlantic Seaboard and central and southern sections of the Rockies and High Plains.

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Greg Soulje, a professional meteorologist since 1985, offers national agricultural weather forecasts via "This Week in Agribusiness."