- 
  
    FederalU.S. Daily Climate Normals (1981-2010)National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. Daily Climate Normals for 1981 to 2010 are 30-year averages of meteorological parameters for thousands of U.S. stations located across the 50 states, as well...
- 
  
    FederalGlobal Historical Climatology Network - Daily (GHCN-Daily), Version 3National Oceanic and Atmospheric Administration, Department of Commerce — The Global Historical Climatology Network - Daily (GHCN-Daily/GHCNd) dataset integrates daily climate observations from approximately 30 different data sources....
- 
  
    FederalU.S. Monthly Climate Normals (1981-2010)National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. Monthly Climate Normals for 1981 to 2010 are 30-year averages of meteorological parameters for thousands of U.S. stations located across the 50 states, as...
- 
  
    FederalU.S. Hourly Climate Normals (1981-2010)National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. Hourly Climate Normals for 1981 to 2010 are 30-year averages of meteorological parameters for thousands of U.S. stations located across the 50 states, as...
