A strong ridge of high pressure will continue to deliver significantly above-normal temperatures across much of the country, although chilly conditions will linger through mid-week in the Northwest.  The focus for extreme heat, currently over the nation’s mid-section, will briefly shift eastward, with mid-week high temperatures expected to approach 100°F as far north as the eastern Corn Belt.  Thereafter, heat will return across the High Plains and neighboring regions, with late-week temperatures possibly reaching 100°F as far north as Montana. 

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