 A couple of showers and thunderstorms will also develop in portions of eastern New England with a weak system sliding through the region. But a large part of the day will be dry with sunshine and highs in the 70s. It is going to be hot in portions of the west today. It will only be increasing as high pressure builds throughout the week. Highs this afternoon will soar well into the hundreds in the California valleys. That's the weather across America.