Ride hard

I went for it today and decided to ride my regular route as fast as I could.  It was tough.  But still not as hard as running.  But I improved my time on the route by 1 min 20 sec.  Quite a jump.  I think inflating my rear tire up to 50 psi also helped.  What is up with this weather?  This could be the longest summer ever.  But at least right now it's just warm, without humidity.