The Annual Polar Bear swim at Scotts Flat Lake, which is held on January 1st is right around the corner. If you have a desire to jump into a near freezing cold lake then got to the boat ramp on the Cascade Shores side and do just that.
Being a member of the Polar Bear Club requires its members to winter swim, which is the activity of swimming during the winter season, typically in outdoor locations (open water swimming) or in unheated pools or lidos. Many winter swimmers swim with standard swimming costumes rather than with wetsuits or other thermal protection. The activity may or may not involve freezing water, depending on the geographical location and the local temperature.