Dress to celebrate! Think dressy and festive, not formal but definitely elevated. Late August evenings can get cool, so a light jacket or sweater is a great idea.
If you invitation says "family" then please feel free to include them in your RSVP, unless you want to enjoy an adult night out that is ok too.
Day time high 72-78 degrees Evening lows 50-58 degrees Humidity- Moderate Rain- Showers possible-August averages 3-4 inches