Welcome

National Climate Data and Information Archive

The National Climate Data and Information Archive, operated and maintained by Environment Canada, contains official climate and weather observations for Canada.

Direct access to climate and weather values in the database is available at Climate Data Online. Use this area to find out what the weather was like on a particular day, for a month, or for a whole year. New... download data files in CSV or XML format, and try the new customizable charts from the navigation options at the bottom of the daily data page.

The Canadian Climate Normals contain averages and extremes for nearly 1,500 locations across Canada. Use this area to find out about the conditions usually found at a location at different times of the year.

A range of other products are also available. Use this area to obtain data documentation, country-wide summaries of monthly data, CD-images, or any other additional services and publications. New... monthly climate summaries are now available for any historical month.