Climate Data Online
Allows data access using a map to search by country, state, city, ZIP code, climate division, and hydrologic unit. Many other geographic tools and secondary functions are also available.
Allows a search by station location and data type.
A number of products have not been migrated into the Climate Data Online map services and must be searched using the legacy interface. This link allows access to these datasets.
Search for many key products such as certified data and CD-ROMs/DVDs.
Climate Data Online (CDO) Help/FAQs
Check out this link for online help and frequently asked questions concerning the CDO system. (Note: You may have to scroll up to find your answer.)