Here's where you'll find answers to your questions about the lowest temperatures and coldest days in Anchorage, Alaska. For instance: When was the last time Anchorage got colder than -25 °F? How cold did Anchorage get in 2018?
This page gives the lowest temperature for each year in Anchorage and the date that it happened. A date with a plus sign beside it means the lowest temperature also occurred on at least one other day earlier that year.
These records were observed at the Ted Stevens International Airport near downtown Anchorage and go back to 1954. The lowest temperature measured during that time was -34 degrees Fahrenheit (-37 Celsius) on January 05, 1975.