Do any of you use Mountain Point Forecasts? I'm planning a trip in the Adirondacks that might involve camping at 4000', so I wanted to get a good idea of the cold we might expect. I've been keeping track of the forecasts for Marcy and I've realized that often the low on the mountain is often higher than the low in the city, ~3800' below. How is that possible?
Here's the last few days of data I've collected:
Marcy Forecast (5344')Saranac Lake Reported (1545')Difference1255 / 5062 / 52-7 / -2
1360 / 5279 / 46-19 / +6
1458 / 5180 / 42-22 / +9
1563 / 5283 / 49-20 / +3
1662 / 5383 / 54-21 / -1
It looks like the high is typically ~20 degrees cooler, and the low is about the same or a few degrees warmer. I have no reason to not trust the Mountain Point Forecasts, but this goes against everything I've ever read, which states that you loose about 3.3 degrees per 1000 feet, with no difference between night and day. Theoretically, the temperatures on Marcy should be about 13 degrees less than Saranac Lake.
Anyone have any idea what's going on on here?