Russia uses a technique, that is well known, to make bank holidays over there rain free. What happens is they fly over rainclouds, and drop dry cement, this diffuses a raincloud, so no rain, so happy citizens.
An added bonus to this tecnique is that all the roads are magically re-paved over night and everyone gets crazy paving on their patio for free.
On the down side, Russia is not a good place to get a job building roads.. And for gods sake dont get drunk and fall asleep outside or the next thing you know, you'll wake up in the town square where the statue if Lenin used to stand....