WILLIAMS CK HATCHERY, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(029367) WILLIAMS CREEK FISH HAT
From Year=1961 To Year=1975
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 961 827 697 522 315 -99 0 -99 148 -99 726 1039 -99
60 806 687 542 372 169 -99 0 -99 76 -99 576 884 -99
57 713 603 450 283 100 -99 0 -99 43 -99 486 791 -99
55 651 547 390 231 67 -99 0 -99 26 -99 426 729 -99
50 496 407 257 112 22 -99 0 -99 3 -99 277 574 -99
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