Hi friends, I want to know the coolest place in the whole US.. I mean that the temperature doesn't rise more than 20 degree celsius during the whole year... I'd be very thankful if any US members tell this... I have something in my mind.. Thank you very much in advance... I hope someone will answer...

Weather patterns fluctuate too much to set an absolute coldest but I am sure Barrow, Alaska has a good shot at it!

It's a bit difficult to answer this in a meaningful way since an overall rise of 20C / 68F in temperature would depend on what the average low and high temp was in the location you are looking at - and that is quite a range of fluctuation - so ... that could be almost anywhere

Places that come to mind are the pacific northwest or Hawaii - as far as being somewhat stable in temp

you're going to have to do a little research - look for free weather web sites or local news stations weather pages

There is not any area like that within the USA.

There are areas that get very cold, especially in winter months. That would be primarily the Northern areas
of the United States and especially up towards Canada.

I would have to say Niagara Falls. It also is the most beautiful placeee in the world, but that is just my opinion.