IDYLLWILD FIRE DEPT, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(044211) IDYLLWILD FIRE DEPT
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
65 764 660 672 509 337 131 22 29 100 307 551 720 4801
60 609 519 517 361 203 57 3 6 39 178 402 565 3461
57 516 434 425 278 140 32 1 2 20 118 315 472 2753
55 455 379 364 227 105 21 0 1 13 86 260 411 2322
50 306 246 226 122 46 6 0 0 3 34 144 263 1397
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