Rainstorm is a Special Ability in the Dry As A Bone Special Mission in Bloons Monkey City. It spawns one or two clouds above all of the Banana Farms and causes them to produce around $1500 when used. It can only be used once per round (making its cooldown moot, unless invoked late in the round). It still affects Monkey Banks and Banana Investments Advisories, although instead of boosts the numbers bananas generated temporarily, it accelerates its addition of interest temporarily.