Harkening back to this post, I wanted to create the weather system for the region I'll be working on as a development point. Sitting in the 31-40 degrees latitude band, the region is of moderate climate - perfect for adventuring.
To generate spring weather, roll 1d12. If you roll a 12, drop a d6. On a 1-5, roll 1d10+1 and consult the chart again. On a 6, roll another d6 for special weather.
Endless mists dramatically increases the chance of getting lost and is the sign of dread beasts wandering the lands.
The spring sleet and hurricanes are just terrible weather.
A faerie storm is where the weather changes dramatically 3-6 times in a single day - often ending with a rainbow of terrible ice storm.
Knife fall is a rain of obsidian-like shards that devastate then melt into nothingness.