RIFLE, COLORADO

Period of Record General Climate Summary - Cooling Degree Days

Station:(057031) RIFLE
From Year=1910 To Year=2007
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 0 13 103 295 500 436 184 15 0 0 1546
57 0 0 0 6 68 239 438 374 136 7 0 0 1268
60 0 0 0 1 31 162 345 282 76 1 0 0 899
65 0 0 0 0 5 61 193 137 18 0 0 0 415
70 0 0 0 0 1 13 66 34 2 0 0 0 116
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