Official records for Flagstaff were kept at the Weather Bureau in downtown from September 8, 1898 to January 11, 1950, and at Pulliam Airport since January 12, 1950. For more information, see ThreadEx
Official records for Phoenix kept at downtown August 1895 to September 1953, and at Sky Harbor Int'l since October 1953. For more information see ThreadEx.
Official records for Tucson kept September 1894 to January 1930 at the Weather Forecast Office, February 1930 to 14 October 1948 at the Weather bureau Office, and at Tucson Int'l since 15 October 1948. For more information, see ThreadEx