Storms

95% of the time, if you're not in a city or the middle of the desert it will be raining. It will usually be pouring, with high winds. Most trees have developed under these conditions to either be incredibly sturdy or incredibly flexible. However, a few times each day one can expect winds of up to 60 or 70mph. Storms closer to the Ice will have sleet or snow, and storms closer to the Desert will have sand intermixed with rain, and can even create torrents of mud.

Gameplay Effects
The standard rules make it impossible for normal ranged weapons to be used during these storms. However, in this world, bows are built more sturdy, because of the elements. Thus, all ranged weapons except for thrown weapons will be treated as 'siege weapons' for determining accuracy. Similarly, it is harder for creatures to get knocked down since they are used to these winds.

D20 SRD Reference