A continental-scale heat wave will remain in place for the next few days, boosting maximum temperatures to 100°F or higher as far north as the northern Plains and as far east as the Mississippi Valley. The heat will be untimely for reproductive to filling summer crops, especially in areas where soil-moisture shortages exist.
During the weekend, modest heat relief will occur, starting across the northern Plains and upper Midwest before expanding southward. However, the southern half of the U.S.
