Weather updates: Heat, humidity on tap Sunday at U.S. Open

Forecast for Round 4, as of 9 a.m. Sunday morning: Temperatures are in the low-80s and are expected to climb into the 90s by 3 p.m. No rain is expected in the area on Sunday, but wind speeds will linger between 8-10 mph throughout the day. There will be around 50% humidity through the afternoon causing temperatures to feel warmer as play wins down Sunday evening.

Forecast for Round 3, as of 5 a.m. Saturday morning: A cold front cleared Pinehurst early Saturday morning causing skies to gravitate toward a mostly sunny look by mid morning, persisting through lunchtime. More clouds will billow up through Saturday afternoon with a 20% chance of a shower or storm trying to form in the area. The majority of any anticipated storms are expected to miss east of Pinehurst.

After a warm start this week, temps are projected to still be into the low-90s this afternoon with a heat index a few degrees hotter. Overall Saturday will be a couple degrees less than yesterday. Northeast winds Saturday afternoon settle by the end of the day with high pressure to the northeast trying to provide a more moderate day on Sunday.

Forecast for Round 2, as of 9 a.m. Friday morning: Temperatures are expected to steadily climb throughout the day from the mid-70s to a high of 93F, with high humidity levels of up to 57% raising the heat index. Low chance of rain and minimal wind speeds of anywhere from 1-9 mph are expected.

Forecast for Round 1, as of 5 a.m. Thursday morning: Temperatures started off the day a touch cooler under a batch of high clouds with some patches of lower visibilities in central North Carolina with fog unlikely at or after sunrise.

A storm system to the southeast will slide up the coast towards the Outer Banks today taking the high clouds and some of the lower-level moisture with it. Temperatures will warm up closer to 90 degrees into the afternoon as lower-level cumulus clouds billow up. There is a zero percent chance of measurable precipitation today, but a 20% chance of a sprinkle. Dewpoints in the mid-60s early this morning will rise towards 70 degrees before falling back towards 60 degrees after lunchtime.

Light winds early will become an east and southeast breeze by this afternoon in the 5-10 mph range with gusts of 10-15 mph possible. The night will become clear, calm and comfortable before entering the hottest day of the week tomorrow with highs approaching the mid-90s as winds have gone lighter and more variable for Friday.

The 124th U.S. Open heads to Pinehurst, North Carolina. Defending champion Wyndham Clark, world No. 1 Scottie Scheffler, reigning FedExCup champion Viktor Hovland, PGA champion Xander Schauffele and three-time U.S. Open champion Tiger Woods will be teeing it up along the world’s best.

The forecast calls for high temperatures, with potential for scattered thunderstorms and showers throughout the week. Here's a day-by-day breakdown (through Sunday) of the U.S. Open official weather forecast, as of 8 a.m. on Monday, June 10:

• Monday: Potential for scattered thunderstorms during the day and overnight with 20% risk of showers throughout the day. Low: 62F, High: 86F. Winds: 4-8 mph, gusting at 12 mph.
• Tuesday: Low probability of rain in the morning with scattered clouds throughout the day. Low: 62F, High: 86F. Winds: 4-10 mph, gusting at 15 mph.
• Wednesday: Low probability of rain with scattered clouds. Low: 66F, High: 88F. Winds: 4-8 mph, gusting at 12 mph.
• Thursday: Low chance of rain beginning in the afternoon with increased temperatures in the evening. Low: 68F, High: 90F. Winds: 4-10 mph, gusting at 15 mph.
• Friday: Rising temperatures and scattered thunderstorms in the afternoon, 40% chance of showers. Low: 68F, High: 92F. Winds: 4-10 mph, gusting at 15 mph.
• Saturday: Rising temperatures and scattered thunderstorms in the afternoon, 40% chance of showers. Low: 68F, High: 92F. Winds: 4-8 mph, gusting at 12 mph.
• Sunday: Heat expected throughout the day with 20% chance of showers. Low: 68F, High: 92F. Winds: 4-10 mph, gusting at 15 mph.