Weird weather today. Left the house at 7:30 and it's -15C plus windchill. 15 minutes later it's -5C with a warm wind out of the north, and no visible Chinook arch. Now, it's -18C or something with 40km/h winds gusting to 60 km/h out of the north. WTF!? I love Calgary weather. We put spikes on the wife's mtn bike and rode in together this morning. I also changed out my ring to a 38T from a 42T. The hills home should be a tad easier.