Does anyone here know much about this record? There doesn't seem to be much information about it either online or anywhere else I have seen, other than the date and having it listed.
The thing about Rogers Pass is that I can find no such weather station at the pass and the one that is fairly close to the pass and has the name Rogers Pass is actually quite mild, especially by Montana standards:
Although Rogers Pass supposedly recorded -70 on January 20, 1954, the next coldest reading I can find in the region is a much warmer -46.
Although places like West Yellowstone or Hebgen Dam do have extreme winter temperatures at times, the area around Rogers Pass seems much warmer in winter and is surprising that it would hold the Montana (and Lower 48) records.
Is there any other weather data available for Rogers Pass?
Is it possible that the -70 reading isn't valid?