I wasn't really going to post, because I didn't really believe myself (does that make sense?) but here goes...
SmilingWhiteKnuckles and I woke up at 2 am this morning at the gate on Eight Mile Road. The temp there was 50 degrees (yup, at 2 am).
We started hiking 2:40 and reached the trailhead after 90 minutes of nice dry road followed by nasty postholing
The temp there was 45 degrees (mm-hmm, at ~4:15).
I was using a small thermometer attached to my pack strap. The pack was sitting on the ground ca. 5 yards from the car for a half hour before I took the 50 degree reading, the 45 degree reading I took while hiking.
I checked with Wayne who has the same kind of meter and uses it the same way, he has had no trouble with it and neither have I. I'm inclined to think the readings were accurate, the air felt that warm.
We eventually decided to turn around - neither of us wanted to start climbing at 8-9 am following a night this warm. Oh well.
I heard today that the Colchuck Lake area can warm up like this, for short periods of time, so maybe this warm air will dissipate tonight or tomorrow. Hopefully all you guys that are headed up there this weekend have better luck than we did!