Daily data include observations of
maximum and minimum temperature, precipitation amount, snowfall amount, and
snow depth from 1062 stations. Data records extend through 2005
and are essentially complete for at least 50 years;
the latest beginning year of record is 1948. Daily records from 158 stations
begin prior to 1900.
Through this USHCN website, CDIAC
and NCDC are now making USHCN daily data available to users through a
convenient and powerful online interface. While these data have been
available through the Internet for several years, users typically had to
download rather large files that contained all data
variables for all stations within a particular state
entire period of record. While obtaining the data in this
manner is still possible, we have added the ability to download data for
individual variables, from individual stations, for whatever time period the
user desires, through a graphical user interface. Not only can data be
downloaded and saved, but users may also plot data from individual stations in
a number of ways, yielding insight into the station's record, and thereby
helping to determine the suitability of a station's data for particular
In an effort to make USHCN daily data more flexible for use
in a wider array of applications (e.g., modeling), they are now also available as
netCDF (network Common Data Form) files.
Go to daily data.