Tuesday, April 26, 3:15PM
 

Weirs Cam says it's 57 degrees F.
Mt. Wahsington Cam says it's 47 degrees F.

Strikes me (without anything but occasional visits to the 2 cams, to go on) that the 10 degree difference might be a record of sorts. Wadda you think?

On reflection, maybe this belongs in the weather section.

All i know, is i just checked the weather in my hometown of Vernon CT and it is 81 and Sunny there, so were getting the shaft up here in the great state of NH :mad:

If you check the WeatherCAM Facebook feed on our home page CLA said:
Maybe CLA can comment on how unusual this is.

doubtful...
 

...while 10 degrees seems like a big difference, I can remember summer days when I'd be in shorts and short sleeves, and going up the Auto Road. We would bring fall or winter coats ALWAYS - and usually needed them at the summit (although wind is a great contributing factor to the cold)! Although, if anyone does know the average and the record, I sure would be interested!

I Dont Think So
 

I have been to the summit many times over the years usually in August and the temperature has been on occasion been the same at the base and the summit and I have had 80+ degrees at the base and snow on the summit. As well all know the weather at the summit can change by the minute.

Oops. Now it's 49 at the Weirs and 44 at the summit (7:20AM, 4/27).
So much for possible records.

I have receipts to prove this event
 

Warned the wife and 3 teenage daughters it would be colder at the summit...$225 later they believed me.Maybe a Visa commerical in this. $85 Road pass, $225 clothes to keep warm, $400 brake job for decent. Hugs at the summit priceless

It's unusual for the reason that it doesn't happen every day, but is not unusual given the weather situation at the time. Warmer air was moving into the region. Being heavier, cold air hugs the ground. When it's retreating (thus allowing the warm air to move in) it leaves the ground last. That's how we get ice storms in the winter -- rain falls from above into cold air hugging the surface. Warm air often arrives at altitude first, when the cold air is retreating and warm air moving in. In winter sometimes, Mount Washington will be above freezing while here at the lake we're many degrees below freezing. If my memory is correct, that happened during the ice storm of 1998. They were above freezing with rain while the cold air filled the valleys below, and the rain froze on contact with surfaces in those valleys.

This time, Mount Washington had temps typical of *their* summertime, while we weren't exactly hot. The truly summer air (at the surface) was still a bit to our south. A basic cross section of a warm front (imagine...) shows the warm air slanted forward in the direction of travel. It arrives first aloft, and gradually builds its way down to the surface.

Double oops.

Today (5/2) at 7:15AM it was 39 on the Weirs cam and 38.1
on the Mt. Washington cam.:rolleye1: