AJO, ARIZONA

Period of Record General Climate Summary - Cooling Degree Days

Station:(020080) AJO
From Year=1914 To Year=2006
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 50 114 222 415 672 922 1096 1036 887 597 234 77 6321
57 30 82 175 359 610 862 1034 974 827 536 186 50 5724
60 12 45 114 278 518 772 941 881 737 446 125 23 4892
65 1 12 44 161 369 622 786 726 587 303 51 4 3665
70 0 2 11 75 233 472 631 571 437 179 13 0 2622
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 Jul 28, 2006
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