Most of the nation is predicted to see warmer than normal weather for the month of July. That's according to the Climate Prediction Center's recently issued outlook for next month. Above average temperatures are forecast from the East Coast through the Southeast and South into the Four Corners. Only the immediate Pacific Northwest coast has odds favoring cooler than average weather. Drier than normal conditions are predicted for the central Plains and mid Mississippi Valley. A wetter than average July is forecast along the Eastern Seaboard and in Arizona. A persistent La Nina was one the driving factors in the July forecast and the Climate Prediction Center expects conditions to last for several months.  La Nina occurs when the waters of the Pacific Ocean show a general trend of cooling, the opposite of an El Nino. The latest model guidance, soil moisture/drought conditions, and global circulation trends also impacted the July outlook.