•Ely, Nevada: Record low of -17F on Wednesday crushed the old record of -5F.
•Ely, Nevada: Record low also set on Thursday (-23F).
•Ely, Nevada: Record low also set on Friday morning (-19F).
Casper, Wyoming: Record low of -22F on Wednesday crushed the old record of -11F set in 1972.
•Medford, Oregon: Record low of 18F on Wednesday.
•Medford, Oregon: Record low of 14F on Thursday.
•Pullman, Washington: Sunday morning’s low of -11F was the city’s sixth consecutive daily record low. It was also the earliest it’s gotten that cold in 74 years of recordkeeping.
•Denver, Colorado: Record low of -13F on Wednesday beat the old record of -5F degrees set in 2008.
•Denver, Colorado: Thursday’s low of -15 tied the daily record.
•Denver, Colorado: Dropped to -13F on Saturday morning, tying another record low.
•Portland, Oregon: Three straight days with daily record lows Tuesday through Thursday.
•Astoria, Oregon: Three straight days with daily record lows Tuesday through Thursday.
•Grand Forks, North Dakota: Daily record lows set on Saturday morning. (-24F)
•Kansas City, Missouri: Record low of 1F on Saturday morning, a tie.
•Bishop, California: Sunday morning brought a record low of 7F (old record 8F).
•Great Falls, Montana: Low of -33F on Saturday was the coldest temperature recorded so early in the season.

http://www.weather.com/news/weather-winter/arctic-cold-blast-subzero-rockies-plains-dakotas-20131202