Joined: Aug 2008
Posts: 13,138
Likes: 2,157
From: Ann Arbor, MI
Bikes: 15 Kinesis Racelight 4S, 76 Motebecane Gran Jubilée, 17 Dedacciai Gladiatore2, 12 Breezer Venturi, 09 Dahon Mariner, 12 Mercier Nano, 95 DeKerf Team SL, 19 Tern Rally, 21 Breezer Doppler Cafe+, 19 T-Lab X3, 91 Serotta CII, 23 3T Strada
Based on my own experience, I would say definitely "Yes," it is ok to not lube the bike immediately after a rain ride.
I have almost never cleaned and lubed my daily riders immediately after getting wet, and have never experienced poor drivetrain performance, component failure, or excessive rusting due to that. My bikes always ride well and look good.
It may be true that getting a bike wet shortens the life of some components, but short of a full tear-down and cleaning, I doubt there is anything to be gained by moving up the cleaning and lubing schedule a couple of days.
As long as you make the effort to keep the bike clean and lubed, you should have many, many trouble-free years of excellent performance.