Can it get any colder?

Besides having my ankle that I broke last year bark at me upon getting out of bed, after taking out the garbage I was once again treated to that dry, frigid air that takes your breath away. On lunch break yesterday evening I took a peak at the weather channel and it registered -47F for the wind chill!!! I really think that these extremes are what is bothering my ankle which is leading to knee and lower leg pain in between. If it persists then I may have to set up an appointment w/the doc. I guess I'll wait for the trend to change even though it may only be temporary.