COPCO NO 1 DAM, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(041990) COPCO NO 1 DAM
From Year=1959 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
65 873 782 749 567 265 190 15 1 19 331 703 933 5428
60 718 639 594 426 162 103 2 0 4 205 553 778 4183
57 625 554 501 345 110 62 0 0 1 140 463 685 3486
55 563 497 439 292 79 43 0 0 0 104 403 623 3043
50 411 354 285 169 23 14 0 0 0 43 253 468 2020
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