CALLAHAN, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(041316) CALLAHAN
From Year=1948 To Year=2006
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 926 721 677 517 321 131 27 36 142 414 726 928 5567
60 771 579 522 369 189 55 5 8 59 266 576 773 4172
57 678 495 429 283 125 28 1 3 31 189 486 680 3429
55 616 438 368 230 90 17 0 1 18 143 426 618 2967
50 462 298 221 118 32 3 0 0 3 59 281 464 1941
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 Jul 28, 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