There's a 50 percent chance of storms from 3 p.m. to 6 p.m. ET on Sunday, according to WTAE in Pittsburgh, and radar predictions indicate that the heaviest rain will fall around 4 p.m. The showers will likely be spotty, though, with intermittent sunshine between.

According to Weather.com, there's a better than 50 percent chance of rain through 5:15 p.m. in Oakmont before the percentages begin to drop precipitously to less than 15 percent by 7 p.m. Play should resume on time as long as there are no other delays.

Play has been suspended in the final round of the U.S. Open due to heavy rain falling at Oakmont Country Club. The horn sounded at 4:01 p.m. ET Sunday — the signal for players to get off the golf course as torrential downpour ensued. The leaders have played seven holes.