In the West, isolated showers linger across California, the southern Great Basin, and the Desert Southwest. In the Northwest, however, hot, dry weather continues to promote fieldwork and crop development.
On the Plains, cooler air is overspreading the northern half of the region, but hot weather prevails from Kansas to Texas. Near the boundary between hot and cool air, beneficial showers are affecting the central Plains.
In the Corn Belt, cooler air is arriving. Much-needed rain is falling in parts of the southwestern Corn Belt, generally stretching from eastern Nebraska to southern Missouri. However, unfavorable short-term dryness persists in much of Iowa, northern Missouri, and neighboring areas. On July 21, nearly one-fifth (19%) of Missouri’s corn was rated in very poor to poor condition, up from 14% last week.
In the South, favorably drier weather is arriving in the southern Atlantic States, except for lingering showers in parts of Florida. July rainfall records have already been broken in locations such as Greenville-Spartanburg, South Carolina (13.57 inches), and Roanoke, Virginia (12.15 inches). In contrast, beneficial showers dot the Mid-South, where only 27% of the pastures in Arkansas were rated good to excellent on July 21.
Outlook: Below-normal temperatures will prevail for the remainder of the week, particularly across the northern and central Plains, Midwest, and Northeast. Late in the week, a secondary surge of cool air will arrive across the Plains and Midwest. In contrast, hot weather will persist for much of the week across the Northwest and Deep South. The week’s most impressive rain will fall due to the interaction between the monsoon circulation and a front draped across the South. Five-day rainfall totals could reach 2 to 5 inches from northern Oklahoma and southern Kansas to the northern Mississippi Delta. Lighter showers (locally an inch or more) will affect the East, Midwest, and Southwest. The NWS 6- to 10-day outlook for July 28 – August 1 calls for near- to below-normal temperatures across the eastern half of the U.S. and the Pacific Northwest, while hotter-than-normal weather will prevail from southern California to the High Plains. Meanwhile, near- to above-normal rainfall across the majority of the U.S. will contrast with drier-than-normal conditions in the northern Intermountain West and from Texas into the central Corn Belt.