An extended period of hot weather is expected for the Mendocino Interior on the holiday weekend. Daytimes highs will likely climb to 100 to 110 degrees Saturday through Monday. The hottest days are expected to be Sunday and Monday. Power grid alerts are possible throughout the Labor Day weekend. The easiest way to take the strain off the grid is to simply run your air conditioner at 78 or 80 degrees. More tips can be found at FlexAlert.org.