Hello Royce,
You can spend a warm July night taking in a great baseball game in one of the minor leagues best parks, right in Sacramento.
http://www.milb.com/index.jsp?sid=t105
We also have some pretty good wineries just a short drive east of Sacramento in the gold country.
When you get the fly fishing portion of your trip a little more organized, shoot me a p.m. if you want to discuss the less publicized day trip options and specifics from Sacramento.
Good Luck, Dave