L.G.
April and October. Not too hot and not too cold. Weather can really put a damper on a garage sale. Stay away from holiday weekends. Pick a day and know that it won't work for everyone. I think garage sales are still effective, but they don't last as long as they used to. Start early and once it really slows down, put up a "half off everything" sign and let the stuff go at half price. It it doesn't go in the early, busy times, it is over-priced or it is not in high demand.