I've found that if you clean your grips on a regular basis you can get pretty close to two full seasons out of the GP New Decade grips (assuming you're not hitting balls and playing every day).  Living in Arizona, I would think the other issue for you is keeping your clubs out of the heat when not playing to help with grip life.

Barry,

  I am fortunate enough to have a "golf club room" in my house.  We have a spare bedroom that contains only golf equipment so my clubs are always indoors and always well kept! :-)

About once a year for me... 

Sounds like I should probably regrip them this fall when the summer golf season ends.  I can do it during our overseeding period when a lot of golf courses are closed or just reopening and aren't quite playable yet.

I regrip every April and September so twice a year, now I play 2-3 times a week so over 100 rounds a year. I can realy tell the difference and I also clean my grips every week so that helps also.

Minimum every season.  I may do so more often if I'm trying different grips out.  I blow my grips on with air so I don't have to cut 'em off.  

Depends on the grip sometimes, but I try to start each season with a new set if I can.

I use the GolfPride MC and when the cord wears down, it is time to change......keeping them clean with a washcloth will help them last longer........I've had these over a year.....and I play at least three days a week........ 

Thanks for all the responses!  I do clean my grips after every round and I keep them stored in my house (golf club room).  Since my 915 woods have arrived, I have noticed a significant difference in the brand new grips vs the other grips on my clubs.  Looks like I will get them all re-gripped hopefully this weekend.  Thanks! 

Usually once a year but I like to clean clubs so it helps keep them nice. Interesting side note, I recently switched to Golf Pride MCC from Lamkin crosslines. The crosslines had 3 wraps on the (bought my ap2's slightly used). When I switched to standard MCC they felt way to small and I was starting to flip the club more. Went back and pulled the new grips and added 3 wraps left hand and 4 right hand and they are perfect. Really takes the hands out of it for me. 

Chris,

   I did the same thing when I ordered mine.  I tend to be a "wristy" player so I added 3 wraps to help eliminate my hands and it truly has helped.  Amazing all the little things that contribute to the golf game.