Four days of high octane warmth, including a brush with a record high last Wednesday, fueled a summery 9.7 degrees above average temperature for Philadelphia last week. Included in the season's first heat wave were some thunderstorms that missed the city by and large, skirting to the north and dropping hail in spots but pretty much leaving the lion's share of the region with little more than sprinkles and clouds. Other than Wednesday's thunder miss in the city, the vast majority of the region was dry last week. There were a scattering of thunderstorms on Memorial Day morning across the Lehigh Valley into Central Jersey but a miss for the Philadelphia region as well.
The transition week from meteorological spring into meteorological summer was more July-like in terms of temperatures, despite the late week return to normal in the temperature department.
Nationally, Spring was warmer than average for the southern and eastern 60% of the country, with the west and Northern Plains generally chillier than average, with a rather cold Spring across North Dakota, Minnesota, and Montana. The core of above average heat was in heart of Texas but much of the Southeast and Mid Atlantic were a good few degrees above average overall.
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