The 6-10 day rainfall forecast
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Across the Corn Belt, rain and gusty winds are affecting the upper Great Lakes region as a cold front interacts with Post-Tropical Cyclone Cristobal. Early Wednesday morning, Cristobal’s circulation was centered about 185 miles west of Sault Sainte Marie, Michigan, moving toward the north-northeast at 30 mph. Widely scattered showers and breezy conditions are also occurring in other areas of the Midwest, although markedly cooler conditions in the western Corn Belt contrast with lingering heat and humidity east of the Mississippi River.

On the Plains, cool, dry weather prevails in the wake of a cold front’s passage. Summer crops across the northern and central Plains are benefiting from a recent boost in topsoil moisture, but drought continues to intensify across portions of the southern Plains. On June 7, nearly one-quarter (23 to 24%) of the winter wheat was rated in very poor to poor condition in Kansas, Oklahoma, and Texas, while 38% of Colorado’s crop was rated very poor to poor.

In the South, cooler air is arriving from the Mississippi Delta westward. Meanwhile, hot, humid, showery weather continues in the Southeast. Showers also linger in the western Gulf Coast region, mainly across Deep South Texas.

In the West, a Freeze Warning was in effect early Wednesday in Colorado’s San Luis Valley. In contrast, above-normal temperatures are returning across the Pacific Coast States and the Desert Southwest. Dry weather throughout the West favors fieldwork, although drought has left rangeland and pastures rated 50% very poor to poor in California, along with 39% in Colorado, 38% in New Mexico, and 32% in Oregon.

For the remainder of Wednesday and Thursday, a cold front sweeping eastward will introduce cooler, drier air into the central and eastern U.S. In advance of the front’s passage, however, hot, humid weather will accompany showers and thunderstorms. In the eastern U.S., rainfall could reach 1 to 2 inches or more. Showers may linger into the weekend, however, in the middle and southern Atlantic States, boosting 5-day rainfall totals to 2 to 4 inches in a few spots. Meanwhile, Western warmth will continue to expand eastward through Thursday, followed by a late-week surge of cool air. During the weekend and early next week, a ribbon of warmth across the nation’s mid-section will lie between areas of below-normal temperatures in the Far West and from the Mississippi Valley eastward, respectively. Little or no precipitation will fall across the western and central U.S. during the next 5 days, except for occasional showers in the Northwest.

Looking ahead, the 6- to 10-day outlook calls for the likelihood of above-normal temperatures across the Plains, Southwest, Northeast, and upper Midwest, while cooler-than-normal conditions will dominate the Southeast and Northwest. Meanwhile, near- or below-normal rainfall across most of the country should contrast with wetter-than-normal weather in southern Florida, across the Northwest, and along the mid-Atlantic Coast.

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