The University of Guelph, School of Environmental Sciences, Agricultural and Forest Meteorology Group, in cooperation with Environment Canada, maintains an automatic weather station at the Elora Research Station located a few kilometres south of Elora, Ontario. This station collects hourly climatic data including air temperature, relative humidity, wind direction and speed, solar radiation, net radiation, precipitation, and soil temperature. This data set includes climatic data collected from 1994 to 1998, and is presented as monthly data files broken down into four categories: hourly data, 0800 data (maximum/minimum values for data collected from 1600 yesterday to 0800 today), 1600 data (maximum/minimum values for data collected from 0800 today to 1600 today), and rain (every minute of occurrence) data. Annual files are also available for hourly, 0800, and 1600 data. Supplement data, including hand collected temperature, humidity and precipitation data, organized by year is also included.