Built To Last Act of 2021 This bill directs the National Oceanic and Atmospheric Administration (NOAA) to identify and support research that enables a consistent, federal set of forward-looking long-term meteorological information that (1) models future extreme weather events, other environmental trends, projections, and up-to-date observations; and (2) is suitable for specified uses, including federal and nonfederal efforts to develop and adopt standards, building codes, and voluntary certifications. NOAA must provide the National Institute of Standards and Technology (NIST) with mesoscale meteorological information when appropriate or upon request by NIST. NIST must publish the information and advise and provide technical assistance to organizations that develop standards, model building codes, or voluntary certifications in order for such organizations to appropriately use the information. The Office of Science and Technology Policy, in coordination with the U.S. Global Change Research Program and the Mitigation Framework Leadership Group, shall designate a working group to identify and support research that enables such forward-looking long-term meteorological information.