The 4th won't look much like the 4th at all this year. Daytime highs only in the upper 70s and lower humidity levels will be likely. The comfort level will be at a pretty high level. It will be one of those days that you will want to stay outside for longer periods of time.
These cooler conditions will run all the way into the early morning hours on Saturday as well. It will be slightly warmer during that afternoon hours. It looks like our highs will bump back up into the low 80s for most of us. Again... the biggest positive will be the low humidity.
Sunday is a day of change. That's when the humidity will become a little more noticeable. It won't be out of this world muggy, but it will be a little more uncomfortable. Of course, that's what one expects during this time of year. So we will get back to where we should be for this time of year. This unfolds during the new work week.
The real taste of summer kicks back in next week. Showers and storms will also return. It doesn't look like temperatures will be extremely warm. Mainly running in the mid and upper 80s.