SIERRA VISTA, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(027880) SIERRA VISTA
From Year=1982 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
65 548 408 305 126 18 1 0 0 2 71 326 555 2360
60 393 269 172 53 3 0 0 0 0 22 190 400 1503
57 302 192 111 30 1 0 0 0 0 10 124 308 1078
55 244 147 79 20 0 0 0 0 0 6 90 249 835
50 121 64 27 6 0 0 0 0 0 1 35 124 378
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