Cold Climate
No widely accepted criteria exist for defining cold climate wine regions. However, viticulturists attending cold climate seminars seem to fall into one of two categories; either their region has: 1) A summertime climate which averages less than 2,000 degree days of heat summation, or 2) A wintertime climate which is cold enough to cause serious freeze injury to grapevines in most years. Either of these situations is truly cold by any standard, and marginal for viticulture.