100ยบF+ Temperature Trend Reported at Mount Shasta, CA | Number of 100ยบF Days in Past Year is Equal to Number in 30 years from 1950 to 2009 100 Degree Daze, by Phil Rhodes When I was young, 100 degree F. days were rare at the weather station adjacent to the Forest Service office in Mount Shasta City. There were two such days in the five years I lived at Mount Shasta in the 1980s. One was in 1987, when data was not recorded at the FS weather […] Guest Author | August 8, 2022 0 Comments