Jimmy, believe it or not, air movement is more important, even critical, during the fall and winter months. That's when the combination of cool, perhaps more shade, and moist conditions lead to insect, fungi, and bacterial infestation.
A box fan is very inexpensive, both to purchase and to run. If it moves more air than you are comfortable with, you can always cover the back of the fan with plastic or cloth. That alone will reduce the air-flow by about 50%.