Environment Canada operates the National Climate Data and Information Archive. The Archive contains the 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.
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.
Canadian Daily Climate Data (CDCD). The 2006/7 CDCD containing daily temperature, precipitation and snow-on-the-ground data is available for download.
Data files can be download in CSV or XML format for further analysis.
Submitted by Kevin Lindstrom, Liaison Library for Earth and Ocean Sciences