I stack my wood in two rows with a little gap between each row on plastic pallets; not covered (I don't sell, just split for my own usage). Some of the wood like hackberry or white oak starts to get 'funky' if it sets for more than say two seasons, but the red oak (and water oak) usually takes 2 seasons to dry out. Pecan can be burned after one season, but I usually let it set for 2 just because it is hardy enough to not get too funky. And I think live oak (only have split up limbs from live oaks because these are truly too nice a tree to cut) can stay seasoning for a long time; it is very dense.
When I am ready to burn, I cover only the sections I am pulling from to burn with a corrugated roof sheet to keep the rain off. In Louisiana we have a lot of heat and humidity in the summer. Very rare for us to get snow, but we get ice/sleet occasionally. Just over last weekend when the temps dipped to the low 20's for three nights was when I had pieces of firewood that were stuck together from ice that formed when the rain froze...not often for us to get that, ha!
When I am ready to burn, I cover only the sections I am pulling from to burn with a corrugated roof sheet to keep the rain off. In Louisiana we have a lot of heat and humidity in the summer. Very rare for us to get snow, but we get ice/sleet occasionally. Just over last weekend when the temps dipped to the low 20's for three nights was when I had pieces of firewood that were stuck together from ice that formed when the rain froze...not often for us to get that, ha!