We’re still a couple days short of Thanksgiving, but it may already be too late for the Oklahoma City Thunder.

After Sunday’s loss to the Warriors, the Thunder are now dead-last in the Western Conference with a 3-12 record, riding a six-game losing streak heading into their next game Wednesday at home against the Jazz.

Missing both Kevin Durant (broken foot) and Russell Westbrook (broken hand) has proven to be too much for the Thunder to overcome. They’ve lost five games by five points or fewer and another one in overtime. That’s left them a ridiculous seven games out of the eighth and final playoff spot just a month into the season.

Both Durant and Westbrook appear to be close to returning, and the Thunder will get a whole let better as soon as they step back on the court. But the Thunder will have to perform at a near-historic level to climb out of their current predicament and make the playoffs.

Right now, the eighth team in the West, the Kings, is on pace to win 50 games. For the Thunder to reach 50 wins, they’ll have to go 47-20 over their final 67 games. Is that possible? Sure. But it’s hardly likely, not in the unforgiving Western Conference and with two stars coming back from injury who will need time to both get fully healthy and comfortable playing again.

And looming over Oklahoma City’s frantic efforts to reach the playoffs for the next several months: Durant is set to hit free agency in about 18 months.

Here are this week’s power rankings:

1. Memphis Grizzlies (12-2) (Last week: 1): While the Thunder look like they could be in danger of missing the playoffs, the Grizzlies are Grit ‘N’ Grinding their way to the best record in the NBA.

2. Toronto Raptors (12-2) (4): The Raptors touted their continuity, and it is paying off. Canada’s team is already a couple games ahead of the field in the East.

3. Golden State Warriors (10-2) (3): Klay Thompson told The Post last week that Steve Kerr seems like he was “born to coach.” It doesn’t hurt when you have an entertaining roster stacked with talent.

4. Portland Trail Blazers (11-3) (6): Holders of the NBA’s longest current winning streak (eight), the Trail Blazers are quieting those who thought last season was a fluke.

5. Houston Rockets (11-3) (2): The Rockets aren’t sure when they’ll get Dwight Howard back, but they still have James Harden and a roster full of athletes to hold down the fort.

6. San Antonio Spurs (9-4) (9): The Spurs are beginning to look like the Spurs again – though it has to be a concern that there seems to be no idea why Tiago Splitter’s calf continues to bother him.

7. Washington Wizards (9-3) (7): With John Wall and Bradley Beal together again, the Wizards can prove they are legitimate contenders for the top spot in the East.

8. Chicago Bulls (9-5) (5): Derrick Rose continues to sit out more games than he plays, and until that changes it’s hard to see the Bulls fulfilling their potential as a title contender.

9. Sacramento Kings (8-5) (10): DeMarcus Cousins and Rudy Gay continue to lead the NBA’s biggest surprise team. They’re making believers out of skeptics.

10. Dallas Mavericks (10-5) (8): Even after losses to the Rockets and Pacers, the Mavericks have the look of a team that, for the first time since 2011, can be a true threat to get out of the West.

11. New Orleans Pelicans (7-5) (13): Anthony Davis, in his third season, is already a destroyer of worlds. The only questions about him now: How many MVPs will he win? And when will he begin winning them?

12. Los Angeles Clippers (8-5) (12): The Clippers continue to muddle their way through the opening weeks. What’s the long-term answer at small forward?

13. Phoenix Suns (9-6) (15): They’re still figuring out how to get the best out of their three point guards – Goran Dragic, Eric Bledsoe and Isaiah Thomas. When they do? Watch out.

14. Cleveland Cavaliers (6-7) (11): The Cavaliers are going to be an offensive juggernaut at some point. How they’re going to become a good enough defensive team remains a mystery, though.

15. Atlanta Hawks (6-5) (14): If Al Horford can stay healthy, the Hawks have the potential to be a dangerous team in the East with their free-flowing offensive system that features 3-point shooting at all five positions.

16. Miami Heat (8-6) (16): Dwyane Wade is already nursing injuries, which only reinforces that Miami can only go as far as his breaking-down body can last in the spring.

17. Milwaukee Bucks (7-7) (17): Jason Kidd got his revenge in Brooklyn, both before the game and with a triple-overtime win. But he’s got an entertaining young team that perfectly fits the style he prefers to play at both ends of the floor.

18. Indiana Pacers (6-8) (18): Frank Vogel deserves Coach of the Year consideration for the way he’s kept the injury-ravaged Pacers afloat.

19. Denver Nuggets (6-7) (28): Suddenly, the Nuggets have reeled off four straight wins, and a season that only a week ago looked like it was on the brink of destruction no longer is in a panic.

20. Orlando Magic (6-10) (22): Victor Oladipo is back healthy, Evan Fournier has played well and Nikola Vucevic has continued to put up numbers, but the wins still aren’t coming as fast as Orlando would like.

21. Brooklyn Nets (5-8) (20): Only the injury-ravaged Thunder allowed the Nets to snap their five-game losing streak last week. Now they have one game – against the 76ers on Wednesday – in eight days.

22. Utah Jazz (5-10) (19): Gordon Hayward has taken a big step forward, averaging 19.1 points, 5.6 rebounds and 4.3 assists.

23. Boston Celtics (4-8) (23): Rookie point guard Marcus Smart should be back soon, which will give Celtics fans a chance to watch him, Avery Bradley and Rajon Rondo terrorize opposing ball handlers.

24. Charlotte Hornets (4-11) (21): The Hornets came into this season expecting to take a big step forward. They’ve taken a big step all right — into a ditch.

25. New York Knicks (4-11) (25): As if things couldn’t get worse: Now Carmelo Anthony is dealing with back spasms that forced him to leave Monday’s loss to the Rockets in Houston.

26. Detroit Pistons (3-10) (26): It’s clearly going to take some time – and some roster reconstruction – for Stan Van Gundy to begin working his magic in the Motor City.

27. Minnesota Timberwolves (3-9) (27): Until Ricky Rubio comes back, it’s going to be very tough for the Timberwolves.

28. Los Angeles Lakers (3-11) (29): Two quick wins were followed by two losses for the Lakers, who at least will be more fun to watch now that Nick Young is back.

29. Oklahoma City Thunder (3-12) (24): Every game the Thunder are without Durant and Westbrook buries Oklahoma City further behind in the standings.

30. Philadelphia 76ers (0-14) (30): The Sixers have five chances – against the Nets, Mavericks, Spurs, Timberwolves and Thunder – to avoid breaking the all-time mark for losses to begin a season (0-18).