FOMC sees a number of reasons to be cautious

A number of reasons for FOMC to be cautious among Fed officials:

"Uncertainty about Greece", yet the broad conclusion among the voters was that the economy was "continuing to approach" the threshold for liftoff, but they "saw room for additional progress" and "would need more information" in order to hike. 

September remains a feasible option should the recent trend in the data continue. 

In a separate speech today San Francisco Fed President John Williams said, "Unlikely to overturn the otherwise strong fundamentals of the US economy, it remains an unlikely tail risk." 

"Short of a sizable contagion from Greece or China, September liftoff anticipation remains same, although with a significant chance that the Fed waits until December", says Bank of America.