US Open Golf Weather 2014: Updated Forecast Report for Day 4 at Pinehurst

Will Mother Nature provide any roadblocks for Martin Kaymer en route his 2014 U.S. Open coronation?

That would seemingly be the only way the 29-year-old German walks off Pinehurst No. 2 without a victory. In Round 3, Kaymer posted a two-over 72 yet retained a five-stroke lead on Rickie Fowler and Erik Compton.

Unless he goes full Retief Goosen, he's got this one all wrapped up already.

Perhaps Kaymer was thinking of Goosen when he commented on Saturday that he knows he still has work to do.

"Anything can happen," Kaymer said, per Rex Hoggard of GolfChannel.com. "I can lead by seven or eight shots after nine holes. I can be down to all square. It will be an exciting round."

The weather could serve as the great equalizer. Any sort of a rain delay could throw the leader off his game, in addition to the effect that precipitation would have on the course.

For the most part, the 2014 U.S. Open has been without incident in terms of the weather, though. Despite scary initial forecasts, Pinehurst has been picturesque.

One of the biggest problems in the early rounds was the humidity. Temperatures in the 80s are bearable except when the humidity is hovering in the 60-70 percent range.

As Golf Digest's Ashley Mayo noted yesterday, though, the humidity had dropped when third-round play began:

The Fayetteville Observer's Chick Jacobs called it "a great day to be outdoors" and said the comfortable weather would continue on Sunday:

Indeed, the weather looks amenable to the golfers hoping to move up the leaderboard on Day 4.

According to The Weather Channel, Sunday's forecast calls for a high of 89 with a 10 percent chance of rain, with the storms possibly rolling in between 2 p.m. and 6 p.m. The humidity comes in at a comfortable 52 percent.

Those are near optimal conditions for golf.

Looking at the pin placements for the final round, per CBSSports.com's Will Brinson, it's clear that the golfers won't need anything else to make the greens more difficult:

AccuWeather.com meteorologist Courtney Spamer reported thunderstorms will be hitting the Southeast during the afternoon, so there's the chance that Pinehurst may fall victim.

Matt Rinde, a senior meteorologist for AccuWeather.com, however, said, "A thunderstorm could pop up Sunday afternoon, but they will likely stay south of Pinehurst."

In order for Pinehurst No. 2 to really be effected by rain, it would have to get hammered. AccuWeather.com's Kevin Byrne spoke to Penn State men's golf coach Greg Nye, who explained that the sandy soil of Pinehurst allows it to absorb a lot of water.

All of this adds up to what should be an enjoyable final round of the U.S. Open.

Kaymer has plenty of opponents to deal with on Sunday, but Mother Nature doesn't look to be one of them.