From TV Guide:
Psych has been renewed for a fifth season, TVGuide.com has confirmed.
The super-sleuthing USA comedy - which stars James Roday as a fake psychic who solves crimes with his excellent observational skills and Dule Hill as his best friend and partner - has been given a 16-episode order. Season 5 is likely to kick off in summer 2010.
The second half of Psych's fourth season will return to its usual Fridays at 10/9c slot in January. But for the first time in the show's history, it will not follow Monk, which airs its series finale Dec 4.