The 2014 Guinness Book of World Records provides some interesting facts.

(a) The lowest temperature ever recorded in the United States was -62.11°C on January 23,1971, in Prospect Creek, Alaska. What is this temperature in degrees Fahrenheit?

(b) International Falls, Minnesota, has the lowest annual mean (average) temperature in the United States (including Alaska). Its mean annual temperature is about 2.5°C. What is this temperature in degrees Fahrenheit?