Coolest weather in months to settle over western US into midweek

Air conditioners can be given a break and jackets and umbrellas will be needed for some as the coolest air since late May and early June grips the western United States into midweek."September got off to a hot start across much of the West, but afternoon highs will be 10-20 degrees Fahrenheit lower in most areas early this week compared to last week," AccuWeather Senior Meteorologist and western U.S. blogger Brian Thompson said.One wave of cool air pushed through the Pacific Northwest with local