Updated Monday 8-13-2012
Extended forecast models keep the ridge of high pressure in place for much of the period between now and August 27. The ridge will periodically break down, like this weekend 8-18 and 8-19 for some minor cooling and chance of showers. However the tendency will be for the ridge of high pressure to rebuild. Thus, temperatures will tend to be above average and below average precipitation with this type of pattern. See forecast map below which is the average postion of the ridge of high pressure at 500 mb (18,000 feet).