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TOC > MSC data > Daily Climate Records

Data and products of the Daily Climate Records (Long Term Climate Extremes)

The daily climate records database, also known as Long Term Climate Extremes (LTCE; see FAQ), was developed to address the fragmentation of climate information due to station changes (opening, closing, relocation, etc.) over time. For approximately 750 locations in Canada, "virtual" climate stations have been developed by joining (threading) climate data for an urban location, from nearby stations to make long-term records. Each long-term record consists of the extremes (record values) of daily maximum/minimum temperatures, total precipitation and snowfall for each day of the year. Many of the longest data sets of extremes date as far back as the 1800s. This dataset identifies, for example, the highest temperature or the greatest snowfall on record for each day of the year for the selected urban area.

Note that the database is updated twice daily with the most recent data being valid for the previous climate day. In cases where there are tied records, the earliest year of occurrence is listed before the most recent year(s) of occurrence.


How to access the data

This data is available on the MSC GeoMet API / web services:

An overview and examples to access and use the Meteorological Service of Canada's open data is available.


The end-user licence for Environment and Climate Change Canada's data servers specifies the conditions of use of this data.

MSC Open Data Service Usage Policy

The MSC Open Data Service Usage Policy determines what constitutes an acceptable use of MSC Open Data services and provides users best practices for optimal use.


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Technical documentation