Extreme heat currently affecting the Northwest and Deep South will expand.  Late in the week, triple-digit (100degree) heat will return across portions of the northern and central Plains.  As the nation’s mid-section turns hotter, limited, late-week heat relief will occur in the West.  Meanwhile, significant rainfall will be scarce during the next 5 days.  Most of the rain will fall early in the week in conjunction with a low-pressure system currently traversing the upper Midwest. 

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