It seems like it is always windy here in South Dakota also. I practiced last year for that very reason. 10 to 15 mile an hour winds didn't affect me to much maybe an inch or two. It was hard to tell because I sometimes seem to do that without wind. But in 25 to 30 mile per hour winds I had about 9 to 12 inches of drift at 100 yards. That was with 100 grains and a 295 gr bullet. I decided that was not ethical so i try to wait for a lull or a close shot. I definitely like hunting on windy days because I do about 98% of my hunting as "still hunting". So rain or wind help alot.