Lee also had 11 rebounds to complete the double-double, and Stephen Curry tallied 13 points and eight assists in Golden State's second win in their last three outings.
Sacramento lost for the fourth time in their last five contests. They were victimized by 21 turnovers to just seven for the Warriors and were out-rebounded 49-35.
Golden State held a 77-76 lead at the start of the fourth quarter, but pulled away with the help of an 11-3 run early in the period.
Both teams played with undermanned rosters after Golden State traded MarShon Brooks and Kent Bazemore to the Los Angeles Lakers, and Sacramento dealt Marcus Thornton to Brooklyn.