May 4, 2015; 10:06 AM ET
A surge of warmth into the Northeast will create Boston's warmest day so far this year on Monday. more >
After a cooler-than-normal summer 2014, the Northeast can anticipate more 90-degree days. Meanwhile, drought conditions will expand in the West.
Parts of this week will feel more like summer across the Midwest and Northeast with the warmest days of 2015 set to unfold.