I took these two images on the same trip, really. 8000 km, 54 degrees centigrade and just over 24 hours separate them. That was a long trip and the contrasts could hardly be larger. Unusually warm for the season in Mountain View California (+27C), and unusually cold for the season in southern Norway (-27C). Work sent me to California in what should have been my Easter break, and I had to catch up with my family as quick as I could. So, after many hours in airplanes, I got home, repacked, drove several hours as far as the road could take me, and then skied for four hours during the night to reach my destination. I had a digital thermometer in my backpack, and it reached -27.4C during the cross country leg. It could possibly have been even colder outside the backpack (and the car reported 83F when I drove on 101 to SFO, but let's say +27C and -27C for symmetry).
My face iced up much worse, but both my camera and phone soon died in the cold, so I got no pictures from the last half. It was a beautifully bright moonlit night, and a stunning sunrise. The ski part was entirely above 1000 masl and above the tree line.