BLACK RIVER PUMPS, ARIZONA

Period of Record General Climate Summary - Heating Degree Days

Station:(020808) BLACK RIVER PUMPS
From Year=1948 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
65 930 770 708 466 228 36 1 5 61 326 668 911 5110
60 775 628 553 318 113 8 0 0 15 189 518 756 3874
57 682 544 461 236 67 2 0 0 5 124 429 663 3212
55 620 487 400 187 45 1 0 0 2 91 369 601 2803
50 465 347 255 90 16 0 0 0 0 38 231 447 1888
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