Several long-range climate indices suggest warmer than normal temperatures will occur across a good portion of the western United States during the month of August. The hottest conditions are likely to be across west Texas and the Desert Southwest where monthly cooling degree day totals could be at a surplus of between 60 and 90. The warmth is forecast to extend northward across the Rockies and Intermountain West with excess cooling degree day totals of 30 to 60 projected in these regions of the country.
Energy costs with respect to cooling will be running higher the normal in these areas. Some other climate indices such as the North Atlantic Oscillation index suggest that parts of the Northeast, Mid-Atlantic, and Ohio Valley may also see periods of slightly warmer than normal temperatures during August. If this takes shape, then higher cooling degree day totals and cooling costs will be likely across these areas of the country as well. Temperatures will average closer to normal across the middle of the country and the southeastern United States.
As for any signs of El Nino or La Nina developing, there are still no definitive indications as sea-surface temperatures in the Equatorial Pacific remain near average for the most part. As a result, the ENSO phase remains neutral and is forecast to continue to be neutral through at least the next couple of months.