Average temperatures are presented graphically by weeks in order to emphasize the changes in temperatures from north to south over the state. Since farming operations, to be efficient, must be planned to take into consideration probable local conditions of weather and length of the season this should be useful in helping the farmers plan their farming program as well as do scientists in developing farm crops best adapted to each locality of the state. The climatological year has been considered as from March 1 through February 28 or 29 of the following calendar year in order to present data for identical calendar days for each week for each year. As a result the first seven days of March are considered as week 1, Week 44 includes data for December 27 through January 2 of the following calendar year. Starting with week 45 the data are therefore presented to correspond approximately with the calendar year. On the following pages is a list of the stations for which data were used together with the number of years data were available for each station. Week numbers together with their calendar dates are also presented in order to more readily indicate the calendar dates covered by each weekly chart.
Number of Pages
South Dakota State College
Pengra, Ray F., "Graphic Presentation of Weekly Mean Maximum and Mean Minimum Temperatures for 58 South Dakota Weather Stations for Each Week of the Year" (1957). Agricultural Experiment Station Agricultural Economics Pamphlets. 191.