I ran yesterday and there were some positives and negatives with the weather.
I'll definitely take the wind we had any day when considering the alternative (who wouldn't), though it ends up as more of a cross-wind on that course given how the winding road is...you get the gusts in your face often enough when you do find yourself out of the pack and the highway is elevated such that its not as the wind is whipping straight from the coast. Its not a jet stream to your back for 26 straight miles...the course still abides by normal physical laws and such.
Temps started out ok, but were definitely a drain in the last hour or so for the elite guys...everyone caked in salt and soaked in sweat, so not exactly comparable to December time CIM conditions with temps in the high 40s. Decent day, no denying, but its not a bullseye from a conditions perspective...You only need to look at the top end and note the casualties of the day to realize that while it was a good day to run fast, the performances weren't out of the ballpark.
I take the OTQ density from the fact that there was a group of 40 guys running 2:18 pace from the gun. The lead was traded, teammates worked together, and kids are generally working hard trying to get the standard in the last 6 months to qualify...its good evidence of the quality of US distance running, not that a marathon course dating back to the 1970's needs to be disqualified...