USDA's Joint Ag Weather Facility says in the Corn Belt, cool air is overspreading the upper Midwest, accompanied by lingering showers. Flooding has mostly begun to subside from central Minnesota into northern Wisconsin, where early-to mid-week rainfall totaled 4 inches or more in many locations. Meanwhile, scattered showers stretch from the lower Great Lakes region to southern Missouri, boosting topsoil moisture for corn and soybeans.
In the South, hot, humid weather prevails. Some of the most extreme heat is occurring in the southern Mid-Atlantic coastal plain, where today’s temperatures will again approach or reach 100°F. Recent showers have fallen in the Southeastern drought area, although rainfall has been lighter in Georgia and South Carolina
On the Plains, below-normal temperatures from Kansas northward contrast with ongoing heat farther south. In fact, high temperatures on the southern High Plains will again range from 105 to 110°F, increasing stress on rangeland, pastures and rain-fed summer crops. Elsewhere, rain is falling in northeastern North Dakota, while showers and thunderstorms dot the central Plains.
In the West, temperatures continue to climb, although cool conditions linger across the northern Rockies. Today’s highs will exceed 110°F in the Desert Southwest, where monsoon-related showers have waned.
In its outlook, USDA says during the next few days, a cold front will move across the southern and eastern U.S., generating as much as 1 to 3 inches of rain. The tail of the front will stall across the central Plains before lifting northward as a warm front, as a new low-pressure system starts to develop across the north-central U.S. The late-week storm could result in 1- to 2-inch rainfall totals across the northern Plains and the Midwest. In contrast, mostly dry weather should persist from California to Texas, accompanied by hot conditions. By early next week, heat will begin to build northward across the Plains and the southern and western Corn Belt .