TRACY CARBONA, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(048999) TRACY CARBONA
From Year=1949 To Year=2005
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 609 409 323 190 75 14 1 1 9 91 346 596 2664
60 454 268 179 85 20 2 0 0 1 25 206 441 1682
57 363 188 107 43 6 0 0 0 0 8 133 350 1199
55 303 140 69 25 2 0 0 0 0 3 93 290 925
50 165 49 15 4 0 0 0 0 0 0 30 154 417
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 Apr 5, 2006
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