"It was difficult out here to see anything," Dempsey said. "We were able to come together when we needed to."
As the conditions deteriorated, the U.S. survived Michael Umana's apparent 70th-minute goal for Costa Rica goal that was disallowed for offside and came away with a red-very-white-and-blue victory. Brad Guzan, in goal because Tim Howard was injured, slid in the snow after balls like a kid in a park.
After wasting an early lead and losing their final-round opener last month at Honduras, the Americans were under pressure to come up with a win, especially with their next game Tuesday at regional power Mexico. Dempsey's 16th-minute goal lifted them from last place in the six-nation group to second, one point behind Honduras, which rallied from two goals down for a 2-2 tie at home against Mexico.
The U.S. extended its home unbeaten streak in qualifying to 23 games over a dozen years (21-0-2).
The gametime temperature of 30 degrees 54 below the start temperature for the 2-1 loss at Honduras last month, when the Americans withered in the heat and humidity as the match went on.
When DaMarcus Beasley slid on his back following a collision, he formed a bit of a snow angel.
Coach Jurgen Klinsmann, criticized earlier in the week in a Sporting News story citing unidentified players and others close to the team, used his 24th lineup in 24 matches since replacing Bob Bradley. With eight players out because of injuries and illness, the 30-year-old Beasley was at left back in his first competitive international start since the 2009 Confederations Cup. Cameron was shifted to right back and Omar Gonzalez and Clarence Goodson started in central defense in front of Guzan, who made his first start in three years.
O U.S. captain Clint Dempsey scores in the 16th minute, and a Costa Rican goal in the 70th minute is disallowed after an offside call.
• The heavy snow causes a brief stoppage in the 55th minute.