Preliminary data taken at five of the climate stations in Western and Central North Dakota show that the meterological autumn and winter seasons for 2011-2012 were ones for the record books. For the September through February period, these 182 days were the second warmest on record over Western North Dakota. However, the meteorological autumn and winter for 2011-2012 was the warmest on record for Central North Dakota and the James River valley. See map below for the top 5 warmest September 1 - February 29 periods at Williston, Dickinson, Minot, Bismarck, and Jamestown.
The top 5 warmest average maximum temperatures across Western and Central North Dakota for the September 1 - February 29 period