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Across the Corn Belt, cool weather accompanies scattered to widespread showers and thunderstorms. The rain is benefiting corn and soybeans, but below-normal temperatures are maintaining concerns about developmental delays, especially in late-planted fields.

On the Plains, showers and thunderstorms across the northern half of the region are gradually ending. Local flooding lingers across the central Plains, following last week’s downpours. Meanwhile, extreme heat and dry conditions have returned across the southern Plains, where spotty drought relief occurred in recent days.

In the South, widespread showers stretch from the Tennessee Valley southward to the central Gulf Coast. Most of the region is experiencing near- or below-normal temperatures, but some heat lingers across the western Gulf Coast region, where rice harvesting continues.

In the West, hot, dry weather stretches from interior sections of California to the southern Rockies. In contrast, cool weather prevails in the northern Rockies.

Western heat will further intensify and shift northward, with most areas west of the Rockies expecting several days of significantly above-normal temperatures. Monsoon-related rainfall will remain scarce until midweek, when some showers may return across the Southwest.

Meanwhile, a cold front will sweep across the eastern half of the country, generating showers and thunderstorms. The cold front’s tail will stall across the South, allowing showers to linger for several days. A surge of cool air trailing the front should result in scattered temperatures below 40 degrees through midweek across northern sections of the Rockies and High Plains.

Elsewhere, Tropical Storm Dorian formed over the weekend and is expected to pass just southwest of Puerto Rico around midweek, possibly as a hurricane. Subsequent impacts on the mainland U.S. will be determined by Dorian’s interaction with the rugged terrain of Hispaniola, which has the potential to significantly disrupt the storm’s circulation.

Looking ahead, the 6- to 10-day outlook calls for below-normal temperatures across the eastern Plains, mid-South, and Midwest, while hotter-than-normal weather will prevail in the Rio Grande Valley, along the Atlantic Seaboard, and from the Pacific Coast to the Rockies.

Meanwhile, near- or above-normal rainfall across most of the country will contrast with drier-than-normal conditions across the interior Northwest and from the western Gulf Coast region into the Ohio Valley.

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