You may aleady know that the Tau Herculid Meteor Shower this year may bring us a meteor storm. They are predicting that this will peak near midnight between May 30 and May 31. At midnight, the radiant will be close to directly overhead, so meteors should be visible before midnight. Keep in mind that meteor storm forecasting is still a bit of an art, so this is only a prediction. But if you have never seen a meteor storm, with over 1000 meteors per hour, then it is worth the attempt.
The meteors are remnants left behind by the comet: 73P/Schwassmann-Wachmann 3
The radiant is located at roughly: Right Ascension - 13h 56m, Declination - +28°
This is a 2 page handout for the event (PDF file).