- Environment Canada's data site (climatedata.ca)
- Prairie Climate Centre's Climate Atlas of Canada
- NCDC-NOAA Global Historical Climatology Network (GHCN) Data-Daily
- NCDC-NOAA U.S. Temperature, Precipitation, and Drought data and products
- Intergovernmental Panel on Climate Change (IPCC)
- Pacific Climate Impacts Consortium (PCIC)
- Prairie Adaptation Research Collaborative (PARC)
- Environment and Climate Change Canada (ECCC)
- RealClimate
- Climate Science, Awareness and Solutions (CSAS) (Columbia University Earth Institute)
- James Hansen Communication Page
- ECCC Canadian Climate Normals
- ESRL: Plot Daily Mean Composites
- ESRL: Plot Monthly/Seasonal Climate Composites
- ESRL: Plot Linear Correlations in Atmospheric Seasonal/Monthly Averages
- ESRL: PSD Map Room
- U.S. National Snow and Ice Data Center (NSIDC)
- NOAA State of the Climate reports (global/national/monthly)
- NOAA ENSO Diagnostic Discussion
- NOAA weekly ENSO Evolution, Status and Prediction Presentation
- NOAA monthly Climate Diagnostics Bulletin
- NOAA Paleoclimatology Data
- American Meteorological Society (AMS) annual State of the Climate reports
- U.S. Fourth National Climate Assessment (Volume I)
- U.S. Fourth National Climate Assessment (Volume II)
- Canadian Drought Monitor (Agriculture and Agri-Food Canada)
- Berkeley Earth Data
- KNMI Climate Explorer