Basically, SE loves their "balance" and people are complaining that it's not balanced. The drop rate is supposed to be the same as anything else but after numerous attempts to farm geodes on Firesday with no weather I don't believe it. Plus there's the complete lack of fire weather most of the year. You could retrace and zone into Grauberg (S) nearly any day of the year and find wind weather. Most every other weather is plentiful. If you see fire weather during the summer months in one of the few zones that have high enough level mobs to drop them, it's gone in 5 minutes. It's definitely possible to farm them with some planning and a lot of extra time to set aside for it, but it's just not balanced compared to the other elements.