STEPHAN 2 NW, SOUTH DAKOTA

Period of Record General Climate Summary - Cooling Degree Days

Station:(397992) STEPHAN
From Year=1903 To Year=2012
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 0 0 2 28 127 351 553 499 231 36 1 0 1827
57 0 0 1 19 95 296 491 439 188 25 0 0 1553
60 0 0 0 9 58 219 400 350 133 13 0 0 1181
65 0 0 0 2 20 114 254 213 64 3 0 0 669
70 0 0 0 0 4 48 131 103 26 0 0 0 313
Cooling Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Table updated on Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu