Thank You for the tips. Last year I did put a fan on them but ended up with the same results and I don’t recall any rain or watering being done towards the end of their season. Humidity may be an issue as you mentioned because I did dry them in the garage which, incidentally, is air conditioned although I didn’t think to use it for onion drying. Odd though, to me anyway, that my garlic does well being dried the same way as I’ve done the onions. BTW, do you dry your onions in the sun or shade? I read conflicting recommendations on this.