Jason Day is feeling good despite being two behind early leaders at weather-hit Pebble Beach

Jason Day ground out a two-under-par 69 to sit two strokes off the lead on Friday when the opening round of the weather-hit Pebble Beach National Pro-Am was suspended for the day with only half the field back in the clubhouse.

The Australian had to contend with driving wind and rain over his last four holes before organisers halted the competition due to unplayable conditions on the Monterey Peninsula in California.

One hour later, play was abandoned for the day with unheralded Americans Rick Lamb and Joel Dahmen, and South Korean Noh Seung-yul, sharing top spot on the leaderboard after opening with four-under 68s.

All three had started out on the Spyglass Hill layout, one of three venues being used for this week's PGA Tour event.

Seventy-four players in a field of 156 had completed their rounds and organisers hope to get the tournament back on track on Saturday.

"We only played four holes in the rain," Day told the Golf Channel after mixing four birdies with two bogeys at Monterey Peninsula Country Club. "It's hit and miss ... sometimes you can get lucky with the draw, especially where you are playing.

"If you were playing at Spy today, it definitely helped a little bit, especially with some of the cover in the trees, but you've just got to take what you can get and try and win the tournament at the end of the week."

Given the weather conditions, Day was thrilled with his opening round.

"I feel pretty good with how things are going, coming out today and shooting a couple under par," said the 29-year-old, a 10-times winner on the PGA Tour.