My suspension has worked just fine at low temperatures with minor adjustments. This includes coil and air forks and rear shocks. Oil thickens at low temperatures, and backing off the damping corrects this.
Which is a good thing, since many of the trails and road allowances that I ride are rougher in the winter than in the summer due to frozen snow. In addition, cracks in pavement tend to widen significantly in winter due to contraction with temperature, meaning rougher roads. Depending on the nature of your route these factors may or may not apply to your riding.
I have yet to experience a suspension component on a department-store bike that provides usable suspension at any time of the year. At that pricepoint, I'd stay rigid.
Last edited by ghettocruiser; 09-10-07 at 12:14 PM.