Winter here can get pretty cold. I think the coldest last year was -30 degrees. So bring warm clothes. But summer here is nice. 70's are the norm. But it can and does get up to the 90's.
Photo Equipment: We have mountains, mountains, and more mountains.
I was interested in walking around the historic district, even if just during lunch, so I brought shoes that were both appropriate for the office (which is fairly casual) and comfortable.
Also - It can be quite cold and windy in the fall & winter, so I brought a parka (shell) and a fleece.