Let the nervousness begin

I'm getting nervous.  Nervous because Jack's party is Saturday.  The party we decided to have 3 weeks before his birthday becuase "Early October weather is always beautiful" I said. 

The party is planned for outside.  With 50 people. 

The forecast is 52 and 30% chance of rain.  I am now in panic mode.  Do I book a place last minute?  Do I cancel and reschedule?  Or do I go with the flow and let things be as they may?

Maybe the weatherman is wrong.  We shall see.