At Weather Underground look up the location you want. Here's Long Beach:
http://www.wunderground.com/cgi-bin/findweather/getForecast?query=long+beach%2C+ca
Scroll about halfway down and you'll fine a History & Almanac section (right under the radar image). Pick a date and play from there. Unfortunatley doesn't really have tools for comparing over time (I took ten minutes and hit the individual searches for each August 10 since '43). The history page also lists the sunrise, sunset, and moon phase for the date as well.