I'm trying to get some action going here so I decided to launch a contest to guess/predict December's low temperature. Entries will be closed after December 5th. No prizes for now, but if this goes well maybe I will sponsor some small prize for future contests.
There's absolutely no skill involved in my guess, just a guess. I will go for a low of -20F. I reserve the right to change this before voting closes.
Edit: Thanks for that info on the range of record lows, that should be helpful. Even with that data I will stick with my current guess. My theory, wrong or not, is that Mount Washington approaches or exceeds a daily record almost every month. At worst once every three months. Which brings -20F into play.