I suppose I never put my predictions. I'm guessing winning time will be super slow, like 2:12-2:13, after a conservative start and a windup near the finish. Hall will run 2:15-2:16 and perform a fair amount better than he did at Boston, but be a few minutes back at the finish, while Sara will be around 2:35.
Temps will be mid-60s at the start and low-mid 70s when they finish, so that's probably not so terrible. It's more of a big deal for back of the packers. If the average temp is 70 while they're running, Daniels puts an otherwise 2:13 runner (shot in the dark for Ryan, which I really hope isn't overly generous right now) at 2:15:15.
Since Sage got mentioned, I'll say that while I'd like to see him succeed, I just don't think he has a realistic chance of qualifying for the trials. A 2:16:52 (his PR) would be worth 2:19:11 in this weather. He'd have to be in shape to run 2:15:38 and beat his PR by 1:14 in good weather to hit a 2:17:59 here. He's a great runner, but I just don't see any reason that he should be at a level so much higher than he was when he ran his best ever marathon. Not trying to be pessimistic, but realistic. Maybe he can qualify in Chicago if he's willing to take more time to work on the marathon.