NAVAJO, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(025837) NAVAJO
From Year=1892 To Year=1976
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1130 830 737 493 245 47 0 5 93 406 741 1087 5814
60 975 689 582 345 124 9 0 1 28 257 591 932 4533
57 882 604 490 260 73 2 0 0 13 181 501 839 3846
55 820 548 429 207 50 1 0 0 8 141 442 777 3422
50 665 408 285 104 16 0 0 0 2 67 297 622 2465
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