Available here as a pdf of the full report.
Available here as overview and chapter summaries.
Summaries of the report:
Climate impacts grow, and U.S. must act, says new report Alejandra Borunda, National geographic, November 23 2018
A Report Not to Be Buried: Part II of the Fourth National Climate Assessment Bob Henson, Weather Underground November 26, 2018
Latest National Climate Assessment Shows US Already Suffering Damages from Climate Change Brenda Ekwurzel, Union of Concerend Scientists, Nobember 23, 2018