COLORADO CITY, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(021920) COLORADO CITY
From Year=1963 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 913 705 609 394 153 24 0 1 37 270 612 903 4620
60 758 564 456 258 75 7 0 0 11 152 462 748 3490
57 665 480 366 187 45 3 0 0 5 101 374 655 2882
55 603 424 309 147 31 2 0 0 3 75 318 593 2504
50 448 288 183 71 10 0 0 0 1 33 194 438 1666
Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. 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