Jarreau and the Huskies (17-13, 9-8 Pac-12) combined to make 17 consecutive free throws over the final 17:40, following five consecutive misses to start the game.
Andrew Andrews scored five of his seven points in the final 2:07. Suggs scored 11 of his 18 points after halftime, making 8 of 13 shots for the game.
Washington won its third straight game after losing eight of its previous 10.
Dewayne Dedmon had 18 points for USC, which was leading 41-39 when he collected his fourth foul and came out of the game with 11:51 remaining. Washington went on to score nine unanswered points and never trailed again.
The Trojans (14-16, 9-8) shot just 37.5 percent from the field for the game.
Nike Men's USC Trojans Cardinal Basketball Practice ELITE Stripe ShortsShop
Andy Katz breaks down the likelihood of Villanova, Syracuse, North Carolina or Oklahoma making a run to the Final Four next season.
Florida State has announced that Xavier Rathan-Mayes will return to the court for his junior season. The 6-foot-4 guard declared for the NBA draft last month but did not hire an agent.
Virginia coach Tony Bennett takes the ACC Fast Break with Dino Gaudio by answering questions like who the best Tony Bennett is and what other sport he'd like to coach.