Taste of summer to spark record-challenging highs in mid-Atlantic AccuWeather 1 hr ago Renee Duff High temperatures soaring to levels more typical of June will put some long-standing records in jeopardy across the Ohio Valley and mid-Atlantic, but forecasters say the summer preview will come to an abrupt end as the calendar flips to May. The core of the warmth was felt across the central Plains Monday, with Omaha, Nebraska, cracking the 90-degree Fahrenheit mark for the first time this year and falling just 3 degrees shy of its daily record of 95. Chicago soared to 79 for Monday's high, a stark contrast to the chilly end to this past weekend when temperatures peaked in the upper 40s.