USDA's Joint Ag Weather Facility says in the Corn Belt, unfavorably dry weather persists. "In addition, late-season heat is returning to the western Corn Belt, further reducing the yield potential of immature corn and soybeans," USDA continues. On Sept. 1, more than one-fifth of the corn and soybeans were rated very poor to poor in Missouri, Iowa, North Dakota, and Wisconsin, USDA elaborates.
In the West, USDA says the most significant shower activity is shifting across the interior Northwest, where moisture is causing minor fieldwork delays but aiding wildfire containment efforts. "Hot weather prevails throughout the West, except along the Pacific Coast," USDA adds.
On the Plains, mostly dry weather accompanies late-season heat, USDA reports. "Today’s highs will approach or reach 100°F as far north as western Nebraska," USDA details. The heat is promoting summer crop maturation and fieldwork, including winter wheat planting preparations, USDA explains. "In Oklahoma, 45% of the wheat seedbed preparation was complete by Sept. 1," USDA reports. However, heat is also increasing stress on rangeland, pastures, and immature summer crops, USDA continues.
In the South, USDA says showers are confined to Florida’s peninsula. "Elsewhere, warm, dry conditions are promoting summer crop maturation and harvesting," USDA explains. The rice harvest, underway in the Delta, was 5% complete in Mississippi by Sept. 1, according to USDA. "Dry weather is especially favorable in the previously waterlogged Southeast," USDA adds.
In its outlook, USDA says heat will affect the majority of the U.S. through week’s end. "In fact, record-setting heat will dominate the northern and central Plains and upper Midwest, where temperatures will average as much as 10 to 20°F above normal," USDA details. In contrast, cool air will overspread the lower Great Lakes region and the Northeast, where late-week temperatures may briefly dip below 40°F, USDA continues. "Meanwhile, little or no rain will fall during the next five days across the central and southern Plains and the Mid-South," USDA reports. Showers will dot the northern one-third of the U.S., including parts of the Midwest, according to USDA. Showers will also affect the Southwest and areas along and near the Gulf Coast, USDA continues. "Heavier rain (locally 1 to 3 inches) will fall across the northern High Plains and the Northwest," USDA elaborates.