"expect cooler that normal conditions which means temps in the high 60's to low 70's with the chance of showers and storms on the front end of the weekend."
This was due to a projected trough that would swing through the region. That indeed will happen but it looks like early enough to spare most of the weekend of any unsettled weather. Right now it looks like Friday will be the only day that will be questionable with cloudy conditions at times. In terms of temperatures it will be cooler that normal to start the weekend with temps in the high 60's low 70's, but warm up into the mid 70's by Sunday and Monday.
Here is the trough that will bring showers into our area on late Wednesday night into Thursday..
But the unsettled weather moves out on Friday (mostly cloudy on Friday) and we are left with cooler than normal temps Saturday..
But warming up very nicely on Sunday and Monday..Click all images to make bigger and see the printouts
So overall from two weeks out not a bad forecast and it should be an enjoyable holiday weekend.