June 1 is an inflection point on the meteorological calendar. It is the beginning of hurricane season, and the beginning of the meteorological summer season. Meteorological summer is marked by very warm temperatures in the south, along with dry conditions in the west and a steady diet of thunderstorms in the southeast. Also, the onus for severe weather shifts to the north. June itself is the most active severe period for the northern Plain and western Great Lakes.
How will this summer fit with the standard summer?

Precipitation has several areas that are expected to be outside of the normal ranges, but they are generally small, and could go either way. The only stand out is the Rockies, where it looks like the monsoon should be particularly active this summer.

The temperatures offer a different tale. The west in particular will be warmer than normal, with the south also expected to be above normal. The hot get hotter.
Enjoy the heat, stay hydrated, and have a good summer.