I'm surprised that local officials haven't proposed some of the following sure-fire ways to make it rain:
1. Organize a mass car wash
2. Encourage everyone in town to leave their car windows down overnight
3. Encourage people to erect clotheslines for drying clothes and to leave clothes drying overnight
4. Plan an outdoor concert
5. Mandate that all wedding and wedding receptions be held outdoors.
6. Plan an outdoor craft fair
7. Encourage people to spray their weeds with Round-Up (rain will cause this not to work)
Feel free to list some of your favorite rain-causing activities in the comment box.