I know this is just my own opinion but I have hashed that same question around for several years now. I used to wait until I had days with little or no wind to go to the range to test any loads or even shoot. I found that with work and other responsibilities that if I wanted to go shooting, I should just go and accept what Mother Nature has for me on that day.
My routine now includes shooting in all kinds of wind unless I am testing a new caliber load and then I am just much more comfortable getting used to new bullets, powders, etc with less wind. I have done a lot of successful load development in 10 to 25 mph wind conditions. I have had some pretty good groups I think because the winds make me concentrate even more than normal. I coyote hunt and it also gives me practice time shooting under windy conditions.