Seriously...... No less than 4-5 times have I reached the point with my yard where I say......... "SCREW YOU!!! GO AHEAD AND DIE!!!" For me, that time is usually late April to late June. We can go a long time without rain and under VERY hot n dry conditions. Not sure what your grass is like but when I divorced my ex in Jan 2008, I swore I would never freak over a yard. I USED to have a large corner light with PERFECT St Augustine Grass. That crap is toooooooooooooooooo high maintenance. My yard now?? What grows grows. I have some St Augustine grass, Bahalia, and 3-4 different types of weeds. When it gets dry in April -June, I water it just enough to keep it alive. THEN comes our humid / rainy time which brings fungus. Throw in periods of dry weather that triggers chinch bugs. In Florida, you can EASILY spend $$$$$$$$$ in one year if you baby a St Augustine yard.....and it STILL might crash n burn.
Long story short........Let weeds grow. Keep em cut and nobody will know. From late June till about Thanksgiving, my yard looks as good as my neighbors across the street who baby their yard ($$$)