The Clear Weather 'enhancement' theme cancels the weather conditions created by these weather enhancements:
Any player who purchases Snowfall and/or is rewarded by Lucy with Rain, will receive Clear Weather automatically for free. Both items will be placed in the player's Storage. A player may own a single copy of Clear Weather, regardless of the number of weather enhancements they own.
Contractors that have this theme enchantment as the background overlay for their stations: