Well, for what it's worth, the thermometer behind me now says that it's 54 out (6;40 Friday a.m), and weather.com's hourly for tomorrow at 11 says it'll be 49 - oh, so close to 50! - with 10% chance of rain.
C'mon, the more the merrier!
Of course, that shiny bike of yours may get muddy......
I'll be at the visitor's center at 11 on Saturday.
If DH comes, he'll be on the flatbar - I think he wants to give the roads one more day to dry out before venturing out there with his new Seven!