This post is not meant to jinx anything but at the moment sun and cloud are forecasted for Saturday. A low of 0 degrees and a high of 12. For updates check the following link.

http://www.weatheroffice.gc.ca/city/pages/nf-23_metric_e.html#detailsf

For Marathoners starting earlier in the morning layers may be a good idea. It will be cool to start and you will warm up throughout the morning for sure! Safe running full tilt!